She can't believe how quickly time has passed.
她不能相信时间过得如此之快。
They don't know what they're missing out on.
他们不知道他们错过了什么。
He won't be able to attend the meeting tomorrow.
他不会能参加明天的会议。
We haven't decided where to go for vacation yet.
我们还没有决定去哪里度假。
I couldn't hear what you said over the noise.
我听不到你在噪音中说了什么。
She isn't sure if she wants to join the club.
她不确定是否想加入俱乐部。
You shouldn't worry too much about the test results.
你不应该为考试结果过于担心。
They weren't aware of the changes in the schedule.
他们不知道日程的变化。
We've didn't see him since the last meeting.
我们自上次会议以来没有见过他。
It's hasn't been easy, but we're making progress.
这并不容易，但我们在取得进展。
muscle contraction 肌肉收缩
economic contraction 经济紧缩
labor contraction 分娩阵痛
heart contraction 心脏收缩
contraction phase 收缩期
contraction stress 收缩应力
contraction and expansion 收缩与膨胀
复数: contractions;
