1. 衰落;減少 If something wanes, it becomes gradually weaker or less, often so that it eventually disappears.
e.g. While his interest in these sports began to wane, a passion for rugby developed. 他對這些運動(dòng)項目的興趣開(kāi)始減退，倒是對橄欖球開(kāi)始有了熱情。 e.g. ...her mother's waning strength. 她母親日漸不濟的體力
2. 減弱;衰落 If something is on the wane, it is becoming weaker or less.
e.g. He was nominally Deputy Prime Minister, certainly, but his influence was clearly on the wane... 當然，他名義上是副首相，但是顯然他的影響力正在下降。 e.g. In 1982, with his career prospects on the wane, he sold a script for ￡5,000. 1982年，他的事業(yè)走下坡路時(shí)，以5,000英鎊的價(jià)錢(qián)賣(mài)了個(gè)劇本。
3. (月)缺，虧 When the moon is waning, it is showing a smaller area of brightness each day as it changes from a full moon to a new moon.
e.g. The moon was waning, and each day it rose later. 月亮漸虧，每天出現的時(shí)間也越來(lái)越晚。 e.g. ...a sky silvered by a waning moon. 被下弦月染成銀色的天空
wane英英釋義
noun
1. a gradual decline (in size or strength or power or number)