| 正面 | 538.activity 英 [æk'tɪvɪtɪ]美 [æk'tɪviti]     |
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| 背面 |      释义： base：卑死。卑鄙死了——卑鄙的。n. 活动；行动；活跃 例句： 1. The military on both sides are involved in intense activity.双方的武装力量都有密集动作。 activity (n.)c. 1400, "active or secular life," from Old French activité, from Medieval Latin activitatem (nominative activitas), a word in Scholastic philosophy, from Latin activus (see active). Meaning "state of being active, briskness, liveliness" recorded from 1520s; that of "capacity for acting on matter" is from 1540s." |