off adv.表示状态的关闭或离开prep.离开；在...之外adj.空闲的；离开的；关闭的v.离开；脱下
to prep.对于；为了；(表示方向)到；向；(表示间接关系)给adv.（表示方向）去；（门）关上
双语例句
I had great difficulty getting off to sleep last night. 昨夜我翻来覆去难以入睡。
For various reasons, the House and Senate, in their bicentennial year, have gotten off to an even slower start than usual. 由于种种原因，众参两院在这两百周年里，一开始[议程进度]就比往常迟缓。
