1.Two weeks ago, criminals sprayed acid in the faces of people to rob them of their motorbikes.
rob of搶奪(某人)…
They knocked me down and robbed me of my wallet.
他們將我擊倒并搶走了我的錢包
。2.I am confident that we are stepping up our response to this crime and we are looking for a safer way to identify some of the substances on the streets.
step up增加(數量等);提高(速度、強度等)
He urged donors to step up their efforts to send aid to Somalia.
他敦促各捐贈方加快速度將援助物資送往索馬里
。