He's bulked up quite a bit since he's been going to the gym.
由于一直去健身房健身，他长壮实了很多。
注释：
bulk up指身体变得强壮，尤其是指健身增加肌肉量。除此以外，bulk up还可指“增加，积累”，尤其指增加厚度，如，“Proper citation of referenced materials can ‘bulk up’ a short paper.”这里用bulk out也是可以的。
If someone or something bulks up or bulks out, they become bigger or heavier.
If someone bulks up or if they bulk up their body, they put on weight in the form of extra muscle.
quite a bit指“很多，相当多”，也可以用quite a lot。类似的还有quite a few/little/number，a good many等。比较混乱吧？看上去像是少，怎么就变成多了呢？来简单看一下。
quite a few指不少，相当多，强调数目，修饰可数名词；quite a little指很多，或比预想的要多，相当于much，但比much等语气更为强烈，强调量或程度之多，修饰不可数名词；quite a lot用法同quite a bit，表示非常多，如果后面要接名词，需加of，如quite a lot of articles。
Quite a bit means quite a lot.
Tom said he wanted to get out of town for a while.
汤姆说他想去外地一段时间。
注释：
out of town作副词，指出城或在外地，作形容词指不在城里的，也可以写作out-of-town，指“城外的，城郊的；外来的”。在英式英语中，out of town也指不在伦敦。
a while指一段时间，一会儿，for a while即指for a short time，“暂时，一会儿”。类似的我们也可以用到awhile，也表示“一会儿”，如sit awhile。
a while和awhile几乎可以互相替换，但区别在于，a while是名词，表示一段时间，需要加介词使用，如原句中的for a while，a while ago；而awhile是副词，意思同for a while。
A while is a period of time.
Tom has had trouble with his left eye ever since the accident.
汤姆的左眼自事故以来一直有问题。
注释：
本句中have trouble with something指身体某处不适或有病痛，此外，这个短语还有“与……有纠纷”的意思，如“I have trouble with my roommate.”；或在某方面遇到困难，如“I have trouble with this lesson.”
If you have kidney trouble or back trouble, for example, there is something wrong with your kidneys or your back.
ever since指“自从，打……以后一直”，直接用since也是可以的。
If something has been the case ever since a particular time, it has been the case all the time from then until now.
The settlement is a matter of time.
和解只是时间问题。
注释：
a matter of time指“（只是）时间的问题”，侧重说明某事必定会发生。
If you say that something is just a matter of time, you mean that it is certain to happen at some time in the future.
I'll drop in on you sometime in the near future.
我近期会顺道拜访你。
注释：
drop in on指顺道拜访，也可指突然拜访。表示拜访，我们还可以用到call on，visit等，其区别在于，call on是社交上的正式用语，指无目的、礼节性的短暂拜访；drop in on多指在计划之外，或事先未打招呼的偶然、顺道拜访；visit是正式用语，强调出于工作需要的访问，也可以指亲戚朋友之间的看望。
If you drop in on someone, you visit them informally, usually without having arranged it.
in the near future指“在不久的将来，近期”，也可以用in the short run，not long in the future等等。
以上短语和句子均来自《托福短语训练》，还没用过的贝友，可以免费试用哦～
由于一直去健身房健身，他长壮实了很多。
注释：
bulk up指身体变得强壮，尤其是指健身增加肌肉量。除此以外，bulk up还可指“增加，积累”，尤其指增加厚度，如，“Proper citation of referenced materials can ‘bulk up’ a short paper.”这里用bulk out也是可以的。
If someone or something bulks up or bulks out, they become bigger or heavier.
If someone bulks up or if they bulk up their body, they put on weight in the form of extra muscle.
quite a bit指“很多，相当多”，也可以用quite a lot。类似的还有quite a few/little/number，a good many等。比较混乱吧？看上去像是少，怎么就变成多了呢？来简单看一下。
quite a few指不少，相当多，强调数目，修饰可数名词；quite a little指很多，或比预想的要多，相当于much，但比much等语气更为强烈，强调量或程度之多，修饰不可数名词；quite a lot用法同quite a bit，表示非常多，如果后面要接名词，需加of，如quite a lot of articles。
Quite a bit means quite a lot.
Tom said he wanted to get out of town for a while.
汤姆说他想去外地一段时间。
注释：
out of town作副词，指出城或在外地，作形容词指不在城里的，也可以写作out-of-town，指“城外的，城郊的；外来的”。在英式英语中，out of town也指不在伦敦。
a while指一段时间，一会儿，for a while即指for a short time，“暂时，一会儿”。类似的我们也可以用到awhile，也表示“一会儿”，如sit awhile。
a while和awhile几乎可以互相替换，但区别在于，a while是名词，表示一段时间，需要加介词使用，如原句中的for a while，a while ago；而awhile是副词，意思同for a while。
A while is a period of time.
Tom has had trouble with his left eye ever since the accident.
汤姆的左眼自事故以来一直有问题。
注释：
本句中have trouble with something指身体某处不适或有病痛，此外，这个短语还有“与……有纠纷”的意思，如“I have trouble with my roommate.”；或在某方面遇到困难，如“I have trouble with this lesson.”
If you have kidney trouble or back trouble, for example, there is something wrong with your kidneys or your back.
ever since指“自从，打……以后一直”，直接用since也是可以的。
If something has been the case ever since a particular time, it has been the case all the time from then until now.
The settlement is a matter of time.
和解只是时间问题。
注释：
a matter of time指“（只是）时间的问题”，侧重说明某事必定会发生。
If you say that something is just a matter of time, you mean that it is certain to happen at some time in the future.
I'll drop in on you sometime in the near future.
我近期会顺道拜访你。
注释：
drop in on指顺道拜访，也可指突然拜访。表示拜访，我们还可以用到call on，visit等，其区别在于，call on是社交上的正式用语，指无目的、礼节性的短暂拜访；drop in on多指在计划之外，或事先未打招呼的偶然、顺道拜访；visit是正式用语，强调出于工作需要的访问，也可以指亲戚朋友之间的看望。
If you drop in on someone, you visit them informally, usually without having arranged it.
in the near future指“在不久的将来，近期”，也可以用in the short run，not long in the future等等。
以上短语和句子均来自《托福短语训练》，还没用过的贝友，可以免费试用哦～
