People used to build strong walls round their towns as a defence against enemies.

Trees are a defence against the wind.

树是一种防风物.

This wall is a defence against the sea.

这堵墙是抵挡海水的.

There can be no real defence against attacks from the air.

对来自空中的攻击是无法设防的.

What's more, it was a stereoscopic defence against outside enemy.

这样一座城寨, 是当年辉发的立国之基,也是抵御外敌的坚实防线和最后一道立体防线.

The immune system is our main defence against disease.

人体的免疫系统是抵御疾病的主要屏障。

The high wall was built as a defence against intruders.

修建这堵高墙作为屏障以防外人闯入.

Armed with pikes for good defence against cavalry, but lacking in armour.

他们接受过部分训练,使用长枪,对抗骑兵颇为出色, 但是盔甲简陋.

Machismo is a defence mechanism.

男子气概是一种防卫的机制.

The pulmonary macrophages are the body's primary defence mechanism to contain M. tuberculosis.

肺泡巨噬细胞是人体防御肺结核类疾病的基本保障.

Lying can be a defence mechanism.

说谎可以成为一种保护装置.

The kind of leader who would leave the country isolated and defenceless.

这种类型的领导人将会使国家处于孤立和毫无防御能力的状态.

The influx of information , though unstoppable, should not render us utterly helpless and defenceless.

　　谁也无法锁住天空, 这是大势所趋, 挡也挡不住.

Often bitten as they sleep, the young ones are defenceless against mosquitoes that carry it.

常常在睡觉时被叮, 年轻者可以使用蚊帐预防它.

Not only are they dumb and dirty, sheep are utterly defenceless.

羊很笨,还很脏, 并且完全柔弱无依.

The village is defenceless against attack.

这个村庄毫无防御能力。

The boss has a nasty habit of baiting defenceless subordinates.

这位老板有一个作弄孤立无助的下级的恶习.

This was a savage attack on a defenceless young girl.

对于一个毫无防御能力的女孩子来说,这是一次残忍的侵犯.

He found himself defending a colony that Britain had left defenceless.

他发现自己在防守一个英国并没有设防的殖民地.

Troops indiscriminately massacred the defenceless population.

军队肆无忌惮地屠杀手无寸铁的民众。

HIV makes you defenceless against infection and illness.

爱滋病病毒使你对有些感染和疾病失去抵抗力.