Paddles are used especially to propel canoes and kayaks.短桨特别用于划独木舟和小艇.International events are held for one - man , two - man and four - man kayaks.国际比赛项目有单人 、 双人、四人皮艇.Canoes are open while kayaks are closed.划艇是敞开的,而皮艇是封...
The following paragraphs deal with intra - source offsets and the so - called " bubble " concept.下面讨论污染源内部的补偿和 所谓 的 “ 泡泡 ” 概念.This is called intra - block chaining.这叫做内部块链接(intra-blockchaining).Suggest choosing manners o...