The bus driver is responsible for the passengers safety.公共汽车司机应对乘客的安全负责.Air hostesses all smile when they serve the passengers.空姐们为乘客服务时总是满脸笑容。Children under 12 and passengers aged 65 or above enjoy concessionary fares o...
哺乳本身刺激催乳激素的产生, 从而生产更多的乳汁.Nursing stimulates further production of prolactin and, therefore, of milk.这种激素的主要功能是控制生长.The main function of this hormone is to control growth.激素的应用是有争议的.The use of steroids is controversial....
The equipment was extremely sophisticated and was monitored from a central control-panel...这台设备极为复杂，由中央控制面板进行监控。She has become very sophisticated since she went to live in London.移居伦敦后她变得世故多了。They are cheating but are so...