1·Ants store food, repel attackers and use chemical signals to contact one another in case of attack.
蚂蚁储存食物，击退攻击者，并使用化学信号联系彼此以防被攻击。
2·They have fifty thousand troops along the border ready to repel any attack.
他们沿边界有5万军队，随时准备击退任何进攻。
—— 《柯林斯英汉双解大词典》
3·In Afghanistan NATO helicopters were called on to help repel an attack by suicide-bombers and gunmen on the Inter-Continental Hotel in Kabul, where many Westerners stay.
驻扎在阿富汗的北约直升机被调去保护喀布尔的洲际酒店，防止“肉弹”和武装人员攻击，这里有大量的西方人员居住。
4·They stood prepared to repel any attack.
他们准备好打退一切进攻。
5·It took teamwork to maintain our defensive line and repel Messi and the Barcelona attack.
团队合作使得我们很好的构建了我们的防线，并有效的遏制了梅西和巴萨的攻势。
6·It can function as a bunker in a nuclear attack, has the ability to repel airborne missiles and its electronic defense system can gridlock the radar of enemies.
它可以作为核大战爆发时的避难所，另外它还具备反导弹功能，它的电子防御系统还能瘫痪敌军的雷达。