Varicomphaius
[醫(yī)] 臍靜脈曲張
??? 情景例句
If there's anything you need, just knock on my door.
有什么需要幫忙的話，盡管敲門來找我。
It is good fishing in troubled waters.
混水之中好摸魚。
and by measuring the time interval between the taps and the receipt of the echoes, the depth of the sea at that point can be calculated.
測出回聲間隔的時間，便可算出該處海洋的深度。