Part of the problem today may have been that the rebel forces sent in for the first time in a long time a lot of very heavy armour. Tanks and rocket launchers were sent in on the ground.

今天的部分问题可能是由于长期以来叛军首次派出如此多重武器，坦克和火箭炮被送上阵地。

youdao

Because this is your house, and you're not about to let any self-proclaimed 'heavy' soldier come in there with their little rocket launchers and their 'large' machine guns to blow up the place.

因为这是你的屋子，你不会允许那些自称为“重武装”的步兵进来用他们小小的火箭筒或者“巨大的”轻机枪在你的屋子里撒野。

youdao

Armed with heavy machine guns, rocket launchers, missiles and grenades, the militants singled out foreign workers at the plant, killing some of them on the spot and attaching explosive belts to others.

NPR: Death Toll Climbs Past 80 In Siege In The Sahara

The Obama administration will undoubtedly come under heavy pressure to move to the low end of the 500-1, 100 limit on launchers in order to match Russian reductions.

WSJ: Arms Control Amnesia