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
双语例句
用作及物动词 (vt.)
This coital position increases the chance of pregnancy because it allows for an ejaculation close to the cervix. 这种性交合体位会增加怀孕的机会，因为它使射精得以靠近子宫颈。
Immediately after ejaculation, the man must withdraw his penis before losing his erection, holding on to the condom at its base so that it cannot slip off. 射精以后，男方在其阴茎松软之前，必须立即抽离其阴茎，握住避孕套开口，以免它滑脱。
