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Agriculture Report - Getting to the Root of How to Water Trees This is the VOA Special English Agriculture Report. Some trees can survive a long time without water. Think of trees that grow in the desert. But other trees may need more moisture than t
There a hold in the middle of the ground. The prettiest hold that you ever did see. Well, a hole in the ground. CHORUS And the green grass grew all around and around. And the green grass grew all arou
Cohesion-tension Theory Atmospheric pressure can support a column of water up to 10 meters high. But plants can move water much higher; the sequoia tree can pump water to its very top more than 100 meters above the ground. Until the end of the ninete
分类词汇植物树 pine 松 cerdar 雪松类 larch 落叶松 juniper 杜松 cone 松果 cypress 柏树 bamboo 竹 box 黄杨 poplar 白杨 cottonwood 三角叶杨 osier 紫皮柳树 willow 垂柳 birch 白桦 maple 枫树 sequoia 红杉 fir 冷杉
rose 玫瑰花 tulip 郁金香 balsam 凤仙花 canna 美人蕉 lily 百合花 jasmine 茉莉 sweet pea 香豌豆花 sunflower 向日葵 geranium 大竺葵 morning-glory 牵牛花 cosmos 大波斯菊 p