氮是一种无色无臭的气体.Nitrogen is a gas without colour or smell.纯空气是无色无臭的.Pure air is colourless and odourless.陶艺课采用的陶土是无毒无臭的天然矿物,柔软湿润,可塑性强.The materials used are natural clays any unpleasant smells....
Proper infection dosage and routes were selected to make the chickens artificially infect avian colibacillosis successfully.选择适宜的攻毒剂量和攻毒途径,诱发淮南麻黄鸡大肠杆菌病....
'It is clear that my client has been less than frank with me,' said his lawyer, through gritted teeth.“我的当事人显然没有告诉我实情，”他的律师咬牙切齿地说道。He gritted his teeth and plunged into the cold weather.他咬咬牙,冲向寒冷的天气.The rest of...