基本解释重锯齿的,二重锯齿同根派生 英汉例句Leaf blade margin biserrate; teeth acuminate with a long awn apically. 叶片边缘具重锯齿；齿渐尖具一长芒顶部。biserrate antennae. 两边有锯齿的触角a biserrate leaf margin. 双锯齿叶边biserrate antennae 重锯齿触角