in all, some 650,000 tons (600,000 metric tonnes) of supplies were ferried to china over the hump, but at a cost: more than 600 planes and 1,000 lives were lost in the airlift.

　　总共有大约65万吨的补给品越过驼峰进入中国大陆，但这是有代价的：空运过程中损失了超过600架飞机和1000条人命。