吃透英语课本，提升在校竞争力
v. （使）变直；（使）变平；（使）变整齐
现在分词：straightening
第三人称单数：straightens
过去式：straightened
过去分词：straightened
The three men straightened and stood waiting.
那3个人挺直了腰站着等。
She sipped her coffee and straightened a picture on the wall.
她抿了口咖啡，然后把墙上的一幅画扶正。
Can you straighten your leg?
你能把腿伸直吗？
straighten out
清理；使成直线；澄清；改正
straighten up
好转；改正；清理
vi.变直；好转
change for the better
take a turn for the better
vt.整顿；使…改正；使…挺直；使…好转
set in order
untangle
