Occlusion
[ə'kluːʒ(ə)n] or [ə'kluʒən]
解释:
(noun.) (dentistry) the normal spatial relation of the teeth when the jaws are closed.
(noun.) closure or blockage (as of a blood vessel).
安娜校对--From WordNet
解释:
(n.) The act of occluding, or the state of being occluded.
(n.) The transient approximation of the edges of a natural opening; imperforation.
西里尔整理