zhú zi / suī rán / kàn qǐ lái / xiàng / shù / dàn / tā de / dì xià jīng / cái / shì / zhēn zhèng / de / jīng

竹子虽然看起来像树，但它的地下茎才是真正的茎。

Although bamboo looks like a tree, its underground stem is the true stem.