1570s, "a vessel in which something is set to cool," agent noun from cool (v.). Meaning "insulated box to keep things cool" is from 1958. Slang meaning "jail" is attested from 1884.
雙語例句
1. Things are cooler and more damp as we descend to the cellar.
當我們往下走去地窖時，四周愈見陰冷潮濕。
來自柯林斯例句
2. Kim opted for cooler blues and yellows in the master bedroom.
金為主臥室挑選了偏冷色調的藍色和黃色。
來自柯林斯例句
3. The water was slightly cooler than a child's bath.
這水比小孩的洗澡水稍微涼一些。
來自柯林斯例句
4. Paint the background tones lighter and the colours cooler.