顶端生长是茎与根主轴和侧枝顶端分生组织、细胞分裂活动的结果。
它们的种子的顶端向上生长，其距离地面的高度刚好可以接触到风；它们的体型大小也刚好是生长所需的尺寸；它们的茎是空心的，且仅仅是通过体内的含水量来保持自身的坚挺。
Their seed heads raised just high enough above the ground to catch the wind, the plants are no bigger than they need be, their stems are hollow, and all the rigidity comes from their water content.
而生长在植物顶端的花，则认为其自然会有引导气血向上的作用。
However flowers were thought to be able to direct the blood and Qi to flow upwards because they grew on the top of the plants.
绵羊罩衣可减少被毛中植物杂质及灰尘含量，防止毛丛顶端的日光风化，提高羊毛生长速度及羊毛品质，增加净毛产量。 在较冷地区还有御寒保暖作用。
Sheep overclothes can keep warm and prevent top of staple from insolation weathering and decrease the impurity and dust, increase wool yield and quality especially in chilliness area.
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