🗣️ 情景例句
Keep cool.
保持冷静。
Sufficient for the day is the evil thereof.
一天的不幸已够人受的了，别再自寻烦恼。
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。