Facultative
a. 授权的, 机能上的, 才能上的, 能力上的, 兼性的, 可选择的, 任意的\\n[化] 兼性的
✅ 同义词
🔴 反义词
🗣️ 情景例句
Oh, Robbie will be thrilled.
啊， Robbie会高兴得不得了。
He was so angry, he began to jump and down.
他愤怒得开始顿足。
The man went to great lengths to prove that the diamonds were real.
那人竭力想证明那钻石是真货。