Understrata
n. 底层 (understratum的变形)
🗣️ 情景例句
That's a good idea.
这是个好主意。
Provided you can offer favorable quotations and guarantee delivery within four weeks from receipt of order, we will place regular orders with you.
贵方若能报优惠价并保证在收到定单后4周内交货，我方将定期订购。
They're dangerous!
它们是很危险的！