It may be a well-known fact, but I didn't know it.这可能是人所共知的事实,但我却不知道。It is well known that bamboo shoots are a panda's staple diet.竹笋是熊猫的主要食物,这是人所共知的。Coca is well-known for reducing hunger, thirst and fatigue.人...
Medical facilities are being reorganized and upgraded.正在对医疗设施进行重组和升级。She sent her provisional licence with the test certificate to have it upgraded to a full licence.她将临时执照连同考试证书一起提交上去以申请升级为正式执照。You can pay to be upgrade...