technology
n. 技术
conclusion
n. decision of opinion reached by reasoning 结论
conclude
v.
reporter
v. person who gathers news for a newspaper, magazine, or radio or TV station 记者
compose
vt. make up, form 组成，构成
concrete
n. building material made by mixing cement with sand, small stones and water 混凝土
atmosphere
n. all the gasses round the earth; air in a place 大气；空气
carbon
n. 碳
monoxide
n. 一氧化物
deadly
a. causing death; likely to cause death 致命的
gas
n. 气体
survive
vi. remain alive; continue to live or exist 活下来；幸存
vt. remain alive after; live longer than 经历...后还活着；比...活得长
survival
n.
program
n. plan of what it to be done 计划
concern
vt. be of importance or interest to; have an effect on 涉及，关系到
oxygen
n. 氧，氧气
originally
ad. formerly 起初，原来
original
a.
hazard
n. danger
hover
vi. stay in or near one place in the air 盘旋

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