叶子的根茎
The rhizome of a leaf
以上为机器翻译结果，长、整句建议使用 人工翻译 。
当植物的叶子或根茎被切开时，植物就发出痛苦的信号(或者也许仅仅是不高兴)：在整个表面释放出气体乙烯。
When a leaf or a stem is sliced, the plant signals pain (or perhaps merely dismay) by releasing the gas ethylene over its entire surface.
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它的叶子和根茎能用于医用用途。
The leaves and stems can also be used for medicinal purposes.
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