常見(jiàn)例句it starts as an adventitious root that grows down from the trunk and forms a planklike structure attached to the trunk all the way, becoming wider toward the ground. 從樹(shù)干基部生出不定根開(kāi)始生長(zhǎng)，斜向入土，形成板狀結(jié)構(gòu)，有增強(qiáng)支持地上部分的功能。 返回 planklike