Appearance test
[化] 外观检查; 外部检查
🧩 词语组成解析
appearance
[ə'pirəns]
n. 外貌，外观;出现，露面;[哲]现象;
🗣️ 情景例句
Danger.
小心，危险。
The frog is frightened at the sight of a snake.
那只青蛙因为看到了蛇而战抖。
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。