游泳或许是现有的最佳锻炼方式。Swimming is probably the best form of exercise you can get.有人在湖上游泳和扬帆。There was swimming and sailing down on the lake.由于存在着危险的下层逆流,在大部分海岸线附近游泳都不安全。Dangerous undertows make swimming unsafe along most of the...
这一节将只讨论介质分层媒质.Only dielectric stratified media will be treated in this section.光波在激活媒质中来回穿过时,将不断得到加强.The wave continues to grow as It'sweeps back and forth across the active medium.麦克斯韦电磁场方程描写了媒质的这种可测量的扰动,而不去详细讨论以太本...
他拔出匕首转身面向追他的人。He drew his dagger and turned to face his pursuers.他转身不理他们,噔噔噔地爬上了山。He turned his back on them and stomped off up the hill.她一下子转身面向他,茶水溅了出来都没注意到。She swung around to him, spilling her tea without noticing it...
The company's welfare officer deals with employee's personal problems.公司负责福利的工作人员处理雇员的个人问题。Financial Compensation forest externals should be public - Welfare forests , not be timber forest.受外在补偿的应该是特定公益林的经营者, 而...