Gaining
n. 增进单向开槽；单向开槽
🗣️ 情景例句
This job offers no opportunity for growth.
这个工作没什么发展机会。
Ok, bye-bye.
好吧，再见。
but that was precisely the idea adopted in some of the early instruments (seismometers) for recording earthquake waves.
但是早期记录地震波的仪器（测震仪）正是采用了这种思路。