Valib
n. 有效
🗣️ 情景例句
Is it all right if I use a letter of credit?
如果我使用信用证，没关系吧？
When she leaves, he'll cry for a day.
她走时，他会哭一天。
Better have something we can get our hands on rather than just spend all our time talking.
有些实际材料拿到手总比坐着闲聊强。