first-arrival

基本解释

She could only enter into it fully when they recalled Sonya's first arrival.
在他们回忆起索尼娅首次来到他们家中的时候，她才参加谈话。
The analysis of seismograms indicates that the first arrival is a P-wave, followed by a S-wave.
地震波记录曲线的分析表明，初至波是P波，随后是S波。
First arriving unit failed to initiate command.
第一个到达现场的救援车辆没有组织指挥。
The first arriver will cook the supper.
谁先到家，谁就开始做晚饭。
On your first arrival at a college, you need to get your bearings! Kelly and Sandra find out about their campus from some schoolmates.
当你初次踏入大学校门的时候,你需要弄清楚和你有关的事情。Kelly和Sandra从一些同学那儿了解了她们的学校。