Vaild
[法] 有效的, 经过正当手续的, 正当的
🗣️ 情景例句
Loosen up! it's not worth getting upset about.
放松点儿！ 不值得为这件事苦恼。
Do you have any time?
你有时间吗？
I know. I can help him with most of his subjects.
我知道。我可以帮助他学习绝大多数科目。