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VERB
衰落;减少
If something wanes, it becomes gradually weaker or less, often so that it eventually disappears.
例句
While his interest in these sports began to wane, a passion for rugby developed.
他对这些运动项目的兴趣开始减退，倒是对橄榄球开始有了热情。
...her mother's waning strength.
她母亲日渐不济的体力
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PHRASE
减弱;衰落
If something is on the wane, it is becoming weaker or less.
例句
He was nominally Deputy Prime Minister, certainly, but his influence was clearly on the wane...
当然，他名义上是副首相，但是显然他的影响力正在下降。
In 1982, with his career prospects on the wane, he sold a script for £5,000.
1982年，他的事业走下坡路时，以5,000英镑的价钱卖了个剧本。
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VERB
(月)缺，亏
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.
例句
The moon was waning, and each day it rose later.
月亮渐亏，每天出现的时间也越来越晚。
...a sky silvered by a waning moon.
被下弦月染成银色的天空