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- three defence lines 三道防线
- Our troops have sliced into the enemy's defence line. 我们的部队已攻破了敌人的防线。
- For three months the Russians poured men and machines into the Kursk salient to build a string of defence lines almost 48km (30 miles) deep. 苏军在3个月里不断向库尔斯克突出部投入部队和武器来建立一条防御纵深将近48公里（30英里）长的防线。
- Defendable earthworks were the first phase of the building of the Defence Line. 在防线上首先建造起来的是防御工事，防御工事完工以后，随后紧接着在防线上又修建了防弹掩体。
- Stukas were called in to blast a hole in the Soviet defence line, opening the way for the panzers. 斯图卡飞机前来支援在苏军的防线上打开一个缺口，为装甲部队打通前进的道路。
- On 11 May, the 227th Infantry ordered a full-scale assault on the Ijssel defence line, which was now heavily defended by Dutch troops. 5月11日，第227步兵师对利塞尔防线进行了大规模的攻击，那里的荷兰守军力量强大。
- The bionic network is a security mechanism which bases on human's physiology characteristic,it is the first defence line to guarantee network.'s security. 仿生网络安全是一种基于人类自身生理特征进行身份验证的安全机制,是保障网络安全第一道防线。
- During the campaign in which we crossed the Yangtze,after our troops broke through the enemy's defence line along the river,my command post was in the headquarters of the Third Field Army,and Zhang Zhen was the chief of staff. 渡江作战，部队突破江防后，我的指挥部在三野司令部，张震是参谋长。
- The girls formed into three lines. 女孩子排成三行。
- protection of maritime defence line 海上防线保卫
- protection of border defence line 边防防线保卫
- He trudge three hour in the snow to get back home. 他在雪中跋涉三个钟点才回到家。
- Our family reunions are always three ring circus. 我家合家团聚的场面总是热闹非凡。
- The train arrived on the dot of three o'clock. 那辆火车三点钟准时到达。
- Her family lives three li away from her school. 她家住在离学校有三里路的地方。
- We spied three figures in the distance. 我们望见远处有三个人影儿。
- The earthwork was cast up in three hours. 土方工程在三小时内就完成了。
- break through (or penetrate) the enemy defence lines 攻破敌军防线
- It's three blocks straight ahead. 一直往前走过三个街区就是。
- The investigator will be divided into three groups. 所有的调查员将被分为三个小组。
