笔直的用英语怎么说？

笔直的

• erect，ramrod，straight，straightforward

例句

• Trees with straight unbent trunks make the best lumber. 树干笔直的树木是最好的木材材料.
• ...an erect stem covered at the base with a few prickles. 根部有几根刺的笔直的茎
• The straight white part in her ebony hair seemed to divide the back of her head in half. 她乌黑的头发中有条笔直的白色分缝，仿佛将她的后脑勺一分为二。