zhí wù xué jiā / tōng guò / guān chá / yè piàn / shàng / de / xì yè mài / lái / pàn duàn / zhǒng lèi

植物学家通过观察叶片上的细叶脉来判断种类。

Botanists judge plant species by observing the veinlets on the leaves.