Lemmas
n. 前题（助定理）
✅ 同义词
🗣️ 情景例句
We'll open a letter of credit if you promise to effect shipment one month earlier.
如果你方答应提前一个月交货，我们就同意开信用证。
She won a scholarship to the state university.
她获得就读洲立大学的奖学金。
We have been brought up to fear insects.
我们自幼就在对昆虫的惧怕中长大。