那需要运动员有高超的技巧、冷静的头脑和迅速的反应能力。It takes great skill, cool nerves and the reflexes of an athlete.显然，她是全家口才最好、最沉着冷静的人。She is clearly the most articulate and self-possessed member of her family.她是个很冷静的家伙。She's a real cool ...
Kelp is rich in vitamins and trace elements.大型褐藻富含维他命和微量元素.On the beach giant kelp had washed ashore.沙滩上有随浪冲上来的大海藻.A gelatin - like substance obtained from kelp and used in impression material.一种从海藻中获得的类似凝胶的物质并且用于印模原料....