He struck the ball straight into the hospitality tents.他将球直接打进迎宾帐篷里。They put up their tents and settled down for the night.他们搭好帐篷，准备过夜。I helped out in the tents fetching and carrying.我在帐篷里帮忙打杂。...
Features of sodium chlorite bleaching for cotton knits are described.本文叙述了亚氯酸钠对纯棉针织物漂白的特点.Optimum conditions of kraft pulping and single stage hypochlorite bleaching were investigated.研究了桑枝硫酸盐法制浆适宜的工艺条件和单段、两段次氯酸盐漂白工艺条件.T...