Alkanes are resistant to attack by oxidizing agents generally.烷烃一般对于氧化剂的作用是稳定的.The general uses of alkanes may be divided into three categories.烷的一般用途可分为三个方面.The straight - chain alkanes exacerbate the problem of engine ...
Blake jumped in expertly; the boat dipped slightly under his weight.布莱克很熟练地跳上了船，他的重量使小船微微向下沉了沉。This picture shows the view from a car using normal dipped lights.这幅图片显示的是从一辆使用正常近光灯的汽车上所看到的景色。The left wing dipped until it ...
Lights reflected off dust-covered walls creating a ghostly luminescence.灯光照在满是灰尘的墙上，反射回苍白的冷光。Sloping walls on the bulk of the building create an optical illusion.大楼主体的斜墙给人造成一种视错觉。The walls have been horribly vandalized w...