The effects of different water retention treatments such as covering with veil, covering with grass and using water retention preparation are studied.
主要研究了采取覆草、覆膜及保水剂等措施的保水效果。
With so many plants animal and other living things covering the planet it can be tough to figure out what type of grass is growing by the roadside or what kind of bird just flew by.
参考译文正因为地球上有这么多植物、动物和其他生物，所以很难断定路边生长的草是什么类型，或者刚刚从身边飞过的鸟是什么种类。
The village of Zahara de la Sierra celebrates the feast of Corpus Christi covering the streets and facades of houses with branches of trees and grass.
对扎哈拉德拉谢拉村庆祝节日科珀斯克里斯蒂覆盖的街道，与树木和草枝房屋外墙。
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