keel

龍骨、船底中樑

The boat's keel scraped against the rocks in the shallow water.

船的龍骨在淺水處刮到了岩石。

龍骨、中央隆脊生物

Flying birds have a deep keel on the breastbone for muscle attachment.

會飛的鳥類胸骨上有明顯的龍骨，供肌肉附著。

倒下、昏倒口語

He keeled over in the heat after standing for two hours.

他在烈日下站了兩個小時後就昏倒了。

翻覆、傾倒

The small yacht keeled over in the sudden gust.

那艘小遊艇在突來的強風中翻覆了。

平穩、穩定

After months of chaos, the company is finally on an even keel.

經歷數月的混亂後，公司終於穩定下來。