mm

毫米、公釐縮寫

The screen is protected by a 2 mm layer of glass.

螢幕外面有一層兩毫米厚的玻璃保護。

嗯、唔口語

Mm, I see what you mean about the ending.

嗯，我明白你對結局的看法了。

嗯口語

Mm, this soup tastes even better than yesterday.

嗯，這湯比昨天還好喝。