They provide structural support, resist damage, transport nutrients and even help send chemical signals to the plant, similar to nerves in an animal.
o叶脉构成植物结构，为植物抵御破坏，甚至传送化学信号，与动物神经类似。
They provide structural support, resist damage, transport nutrients and even help send chemical signals to the plant, similar to nerves in an animal.
o叶脉构成植物结构，为植物抵御破坏，甚至传送化学信号，与动物神经类似。
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