at the same time
同时；然而
用法：时间状语
She listens to music and does her homework at the same time.
她一边听音乐一边做作业。
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make sure
确信；证实
用法：make sure + that 从句/of
Please make sure that all the windows are closed before you leave.
离开前请确保所有窗户都已关好。
after all
毕竟；终究
用法：独立状语
Don't be too hard on him; after all, he is new here.
别对他太苛刻，毕竟他是新来的。
break down
分解；发生故障；失败；毁掉；制服
用法：机器 break down
Our car broke down on the highway on the way home.
回家路上我们的车在高速公路上抛锚了。
can't help doing
忍不住做
用法：can't help + doing
She couldn't help laughing when she heard the funny story.
听到那个有趣的故事，她忍不住笑了。
get along with
与……相处
用法：get along (well) with sb.
She gets along well with her roommates in the dormitory.
她和宿舍的室友们相处得很好。
in particular
尤其，特别
用法：修饰名词或作状语
She loves outdoor sports, hiking in particular.
她热爱户外运动，尤其是远足。
in time
及时；最终
用法：in time (to do / for sth.)
The doctor arrived just in time to save the patient.
医生及时赶到，救了病人。
it is worth doing
值得做
用法：It is worth doing sth. / be worth + doing
This museum is well worth visiting if you love history.
如果你热爱历史，这座博物馆非常值得参观。
put off
推迟；扔掉；阻止
用法：put off + 名词/doing
Never put off until tomorrow what you can do today.
今日事今日毕，不要拖到明天。
so as to
以便；为了
用法：so as to do sth.（不用于句首）
She turned down the music so as not to disturb her neighbors.
她把音乐调小，以免打扰邻居。
there is no doubt that
毫无疑问
用法：There is no doubt that + 从句
There is no doubt that exercise is good for both body and mind.
毫无疑问，锻炼对身心都有好处。
a dog's chance
极有限的一点机会[常用于否定句]
a dose of
一剂（药）
a dozen eggs
一打鸡蛋
a jolly dog
[俚语]快乐的家伙；酒友
abandon ship
弃船
abdominal muscle
腹肌
abdominal pain
腹痛
about to do
刚要；即将
absolute freedom
绝对自由
absorbed dose
吸收剂量，吸收量
academic freedom
n. 学术自由
acute abdomen
[医]急腹症
adobe flash
动画制作；FLASH动画制作软件
adobe flash player
一种多媒体播放器
adopt various methods
采取不同办法
adopted child
养子，养女
adoptive father
养父；义父
agree to do something
同意做某事