热带植物园的讲解牌提醒游客，箭毒木的树液有毒，参观时必须与其保持距离。
A sign at the tropical botanical garden warns visitors that the sap of the upas tree is poisonous and that they must keep their distance while viewing it.
A sign at the tropical botanical garden warns visitors that the sap of the upas tree is poisonous and that they must keep their distance while viewing it.