zhí / wù / yuán / de / gōng / zuò / rén / yuán / gěi / zhè / zhū / zé / lán / guà / shàng / le / míng / chēng / pái / fāng / biàn / yóu / kè / biàn / rèn

植物园的工作人员给这株泽兰挂上了名称牌，方便游客辨认。

The botanical garden staff put a name tag on this Eupatorium to help visitors identify it.