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1.sensor n. 传感器
The latest Japanese vacuum cleaners contain sensors that detect the amount of dust and type of floor.
日本最新款吸尘器装有传感器，能测出灰尘量和地板类型。
2.altitude n. 高地；高度；[数] 顶垂线；（等级和地位等的）高级
The aircraft had reached its cruising altitude of about 39,000 feet.
那架飞机已经达到了大约三万九千英尺的巡航高度。
3.radiation n. 辐射；发光；放射物
They suffer from health problems and fear the long term effects of radiation.
他们受健康问题的困扰，还担心遭受辐射造成的长期影响。
