1540s, "action of failing;" 1550s, "action of deserting a party, leader, etc." from Latin defectionem (nominative defectio) "desertion, revolt, failure," noun of action from past participle stem of deficere (see deficient). Originally used often of faith.
权威例句
1. He denounced the defection as a stab in the back.
他谴责这次背叛是背后捅刀子。
2. His defection to the other side was the ultimate betrayal.
他变节投向另一方是最终的背叛.
3. The successful defection of Lyalin presented MI 5 with a unique opportunity.
利亚林叛逃成功使军情5局得到了一个难得的机会.
4. It was he who first fingered Philby in the USA after defection of Burgess and Maclean.
正是他在伯吉斯和麦克莱恩叛逃之后,首先在美国指出了菲尔比.
5. Houghton, Lonsdale, and presumably also the Krogers would all be blown by the defection.