Prefocus
vt.使预先聚焦, 预先调节…的焦距
🗣️ 情景例句
What's this?
这是什么？
When he plays football, he wears a uniform.
他踢足球的时候，也会穿着制服。
First of all, don't come in here without a teacher.
首先，没有老师领着不要进这儿。