大部分时间里，撕裂发生的速度与人类指甲生长的速度一样——每年大概16毫米。

For most of the time, this happens at around the same speed that human fingernails grow - about 16mm a year.

youdao

大部分时间里，撕裂发生的速度与人类指甲生长的速度一样——每年大概16毫米。

For most of the time, this happens at around the same speed that human fingernails grow - about 16mm a year.

youdao