那茎秆就像根潜水呼吸管，当植株的绝大部分被淹没在水下时，它仍能保证植物与大气进行气体交换。
Like a snorkel, the elongated stem allows the plant to exchange gases with the atmosphere while most of it is submerged.
那茎秆就像根潜水呼吸管，当植株的绝大部分被淹没在水下时，它仍能保证植物与大气进行气体交换。
Like a snorkel, the elongated stem allows the plant to exchange gases with the atmosphere while most of it is submerged.
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