1.C 失误，过失；小毛病　a small fault or mistake, especially one that is quickly put right
2.C 行为失检；偏离正道；背弃信仰　a failure in correct behaviour, belief, duty, etc.
3.C 时间的流逝〔推移，间隔　〕a passing away, especially of time

　He is usually well-behaved; this rudeness is only a lapse.　他一向彬彬有礼，这次的无礼只是一时的失态。
　His lapse into drunkenness followed a long run of bad luck.　他的酗酒恶习带来了一连串的不幸。
　The lapse of year will never efface that scene of ruin from my memory.　时光的流逝绝不会把那废墟的景象从我的记忆中冲淡。

1. vi.退步；陷入；倒退，衰退　pass gradually into a less active or less desirable state
2. vi.丧失，失效（商务协议、官员、法律权利等，尤指因未予运用、死亡或放弃）(of a business agreement, official title, legal right, etc.) come to an end, especially because of lack of use, death, or failure to claim

　He soon lapsed into his previous bad habits.　他很快陷入以前的恶习中去。
　Her right to the property has lapsed.　她的财产权失效了。