您要查找的是不是：
- The dog kept a vigilant guard over the house. 這隻狗警惕地守護著這所房屋。
- He urged them to guard against conceit. 他要求他們防止驕傲自滿。
- Pig iron used as permanent ballast. 壓載鐵做為永久性壓艙物的生鐵
- He bribed his way past the guard and escaped. 他買通看守而逃之夭夭了。
- The ship was furnished with ballast. 船上裝了壓艙物。
- I was off my guard and made no suitable reply. 我沒提防，因此沒有作出適當的回答。
- The guard of honor headed up the whole parade. 儀仗隊走在遊行隊伍的最前頭。
- Please guard against pickpockets on the bus. 在公共汽車上要謹防扒手。
- The soldier volunteered for guard duty. 那個戰士自告奮勇去站崗。
- The ballast placed in the ship can keep the ship steady. 放在船上的壓艙物可以保持船的平穩。
- The guard had orders to shoot on sight. 哨兵奉命見人就開槍。
- Be on your guard, I conjure you. 千萬要警惕呀，我懇求你。
- Four soldiers stood guard over the coffin. 四個士兵守衛靈柩。
- The guard should be watchful during the night. 警衛在黑夜裡也應該警醒。
- The guard was killed with a high-powered rifle. 那衛兵被殺傷力大的火槍擊斃了。
- The train robbers coshed the guard. 搶劫列車的匪徒用短棍襲擊列車長。
- The ballast may be thrown out to make the balloon go higher. 沙袋可以拋掉以使氣球飛得更高。
- Be on guard when somebody flatters you. 有人奉承你時，一定要當心。
- While danger threatens we must all be on guard. 危險正逼近，我們必須保持警惕。
- He struck the guard down with his fist. 他揮拳打倒了那個衛兵。
