Unsubstituted
未被取代的
🗣️ 情景例句
Why should I hire you?
我为什么要用你呢？
Do you ever study English on Sunday?
你曾经在星期日学英文吗？
If he had not broken his tooth, he would not be in hospital now.
如果他没有把牙齿弄坏，现在就不在医院了。