滑滑板时带护肘和护膝是必要的.Elbow pads and knee pads are essential on a skateboard.所有参赛者比赛时都必须佩带安全头盔及护膝、肘等可能必要的安全护具.It is mandatory that riders wear and approved safety helmet during racing.我要一副护腕和两副护膝.I want a pair of wrist protecto...
He gashed his leg while felling trees.他砍树的时候砍伤了腿。They are felling all the trees in this area.他们在砍伐这个地区的所有树木.Because you let me have that kind of disjunctive felling.因为你让我有了那种分离的感觉。...
Cirrate: Having or resembling a cirrus or cirri.有卷须的: 有卷须的或象卷须的.For example, they are standard equipment on the Cirrus series of single engine aircraft.例如, 他们的标准设备的Cirrus系列单引擎飞机.Cirrus sac located between intestinal fork...
Selective dehydration of hexose, such as D - fructose, is one of main synthetic methods for 5 - hydroxymethylfurfural.果糖等己糖选择性脱水是制备 5- 羟甲基糠醛的主要方法之一....