Faculative
a. 允许的, 任意的, 兼性的, 偶发的
🗣️ 情景例句
I'll get the rest of the dinner.
我去把晚餐的其馀东西端来。
Whom will you race with?
你将和谁比赛？
Then the Class 2 runner dropped his stick on the ground when he was passing it on to the fourth runner.
忽然2班的运动员在传棒给第四个运动员时，把棒弄掉到了地上。