Precursory
a. 先驱的, 前兆的
✅ 同义词
🗣️ 情景例句
I have just begun to learn and my serve isn't very good.
我刚刚开始学习，发球不太好。
Not necessarily.
不见得。
That's how we got so wet and dirty.
这就是我们怎么弄得这样又湿又脏的原因了。