我可不是开玩笑,事情够麻烦的了.I'm serious, things are difficult enough as they are.更麻烦的是，每个人对维生素的需求量是不同的。To complicate matters further, everybody's vitamin requirements vary.买房子会是件很麻烦的事。Buying a house can be a very tiresome ...
The criterion of irreversibility is also not decisive for the interpretation of demarcation of developmental homeostasis.不可逆标准对于解释或区分发育同形作用也是不明确的.The irreversibility is the essential characteristic of porous media seepag...
The prospecting team has traversed the length and breadth of the land.勘探队踏遍了祖国的山山水水.Andrew traversed the prairie on horseback.安德鲁骑马穿越大草原.The boys traversed a small hump - backed bridge to the opposite shore.两个人便走上窄小的圆拱桥,...