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VERB
衰落;減少
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.
他對這些運動項目的興趣開始減退，倒是對橄欖球開始有了熱情。
...her mother's waning strength.
她母親日漸不濟的體力
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PHRASE
減弱;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...
當然，他名義上是副首相，但是顯然他的影響力正在下降。
In 1982, with his career prospects on the wane, he sold a script for ￡5,000.
1982年，他的事業走下坡路時，以5,000英鎊的價錢賣了個劇本。
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VERB
(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.
例句
The moon was waning, and each day it rose later.
月亮漸虧，每天出現的時間也越來越晚。
...a sky silvered by a waning moon.
被下弦月染成銀色的天空