internal clock

• 生物钟,内时标,内时钟

internal clock的用法和样例：

例句

1. He has an internal clock that the Swiss would envy.
   他有一个让瑞士人都妒忌的生物钟。
2. Songs and laughter lubricate the biological clock.
   歌声笑语可使人体生物钟顺畅运转。