美國人這樣說英語(MP3+中英字幕) 第63期:"走下坡路"怎麼說?

I get tired so easily these days.
我最近總是感到乏力。
That means you're over the hill.
那是因爲你在走下坡路。
Now, he is over the hill.
現在，他在走下坡路。
over the hill
走下坡路

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If I'm too old to cut the mustard, maybe I should retire.
如果年紀大了不能勝任，我可能就會隱退
Cut the mustard
勝任
He can't cut his mustard.
他不能很好地完成分內工作。
If he can't cut the mustard, we'll have to find someone else to do the job.
如果他沒能力完成自己的工作，我們會找他人來做。