minutes是不是可數(shù)名詞

　　We stood talking for a few minutes.

　　我們站著談了幾分鐘。

　　This clock loses two minutes a day.

　　這時鐘每天慢兩分鐘。

　　Each class is 45 minutes in length.

　　每一節(jié)課為45分鐘。