Predose
预[初始, 本底]剂量
🗣️ 情景例句
Are you sending it by regular or by speed?
你要寄平信还是快递？
What are you writing?
你正在写什么？
They would have continued to struggle against economic odds and would have lived in obscurity.
这家人会继续为克服经济上的拮据而奋斗，并默默无闻地活下去。