Acidotest
乙氧苯基偶氮苯二胺
??? 情景例句
visiting places of revolutionary interest, outings, parties.
參觀革命圣地，出去郊游，或者舉辦晚會。
Look for a needle in a bundle (or bottle) of hay.
海底撈月。
The third person who lit a match started the fire.
第三個工人擦亮一根火柴就引發了火災。