防线

Our tanks have breached the enemy defences.

我方坦克车突破了敌人。

At Genappe, an effort was made to wheel about, to present a battle front, to draw up in line.

在热纳普，有人还企图回转去建立，去遏止，堵截。

Grimsby sliced through Swindon's defence.

格林姆斯比轻松突破斯温顿。

Experts said that antemarital examination, pregnancy testing and prenatal care is the prevention of disease, birth of the three lines of defense.

专称，婚检、孕检和产前检查是预疾病、优生优育三道。