Maintenability
[电] 可持久率
🗣️ 情景例句
Your mother is thinking of
你妈妈正考虑
Would you please tell me the exchange rate for pound sterling into RMB?
请你告诉我英镑兑换人民币的汇率是多少，好吗？
I have a letter of introduction here.
我这儿有一封介绍信。