Eisa
[计] 扩充工业标准体系结构
🗣️ 情景例句
We communicate with each other by letter.
我们用书信彼此联系。
Look before you leap; see before you go.
三思而行。
No, look, it says Closed. It's not open this morning.
不对，看！写着“关门”的，今天早上不开。