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1.observe vt.注意到; 监视; 观察
例句：
I observed him entering the bank with a gun.
我看到他带着枪进了银行。
2.in check 受抑制的,受控制的
例句：
If I hadn't kept my self in check, I might have said something that I would have regretted later.
要不是我控制自己，我一定会说出一些我以后会后悔的话。
3.cumbersome adj. 笨重的
例句：
A cumbersome writing style.
粗笨的手写体
4.ascend v. 上升,攀登
例句：
The airplane ascended higher and higher.
飞机渐渐升高。
