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...
Trunk muscle endurance, hip muscle strength ( dynamometer ) and gaIt'speed were evaluated.测量躯干肌耐力 、 臀肌力量 ( 测力计 ) 及步行速度.A new type of digital and intelligent dynamometer is introduced.介绍了一种新型数字式智能功率表.The chassis dyna...
He said anyone giving orders without respecting the wishes of his people is heading for disaster...他说任何不尊重人民意愿而发号施令的人都注定会走向灭亡。One in four people worldwide are without adequate homes...全世界有1/4的人没有个像样的家。We live in a world ...
The Confederate States perceive that they cannot carry all before them with a rush.南部邦联可以看出,他们不可能突然一下子大获全胜.There were dissensions within the Confederate cabinet, disagreements between President Davis and his generals.南部联...