Auxin, for instance, stimulates the rate of cell elongation, causes shoots to grow up and roots to grow down, and inhibits the growth of lateral shoots.
例如，生长素刺激细胞延伸的速度，促使芽和根生长，而抑制侧枝的生长。
Without outlet or inlet to the eye, it has still its history, in the lapse of its waves, in the rounded pebbles on its shore, and in the pines which grow down to its brink.
一眼望去，湖水既无出口，又无入口，可是湖也有它的历史，就在它起伏的波浪里，它岸边的磨光了的卵石里，和它周围绵延不绝的松树里。
East Indian tree that puts out aerial shoots that grow down into the soil forming additional trunks.
东印度一种树，树枝上长出气生根，向下深入土壤中，形成附加的树干。
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