GbEng
他是全队的主力. He's the kingpin of the whole team.
英格兰队某些主力运动员受伤而使攻球削弱. England's attack has been weakened by the injury of certain key players.
前哨派驻在离主力部队很远的地带的支队以防敌人的偷袭 A detachment of troops stationed at a distance from a main force to guard against surprise attacks.
在师主力部队之前先行派出装甲车去侦察敌军的活动。 Armoured cars were sent ahead of the main body of the division lo spot enemy troop movements.