He added that many people were shot in the head, with seven people within 10 yards (meters) of him cut down in the first wave.
他指出很多人被爆头射杀，而他周围10米就有7人在第一波射击中倒地身亡。
2
This arrangement lasted until the 1930s, when the invention of short-wave wireless improved and cut communications costs.
这种安排一直持续到1930年，当时的无线短波改善和降低了通讯费用。
3
Imagine you could wave a magic wand and boost the yield of the world's crops, cut their cost, use fewer-fossil fuels to grow them and reduce the pollution that results from farming.