Molecular clock
[计] 分子钟
🧩 词语组成解析
clock
[klɑk]
n. 钟，时钟;计时器;秒表;仪表;
vt. 记录（时间或速度）;测…的速度;
vi. 打卡;记下时间;
🗣️ 情景例句
I cried because I miss them all.
我哭因为我想念他们。
Art is long, but lift is short.
人生有涯，而学无涯。
They also have the disadvantage of being an expensive form of transport.
飞机另一个缺点是昂贵。