quantity of radiation

例句：

1. 1. The amount of radiation from the sunis a concern for astronomers.
   太阳发出的辐射量是天文学家们关注的问题。
2. 2. The quantity of radiation in this areais dangerously high.
   这个区域的辐射量危险地高。
3. 3. The scientist used a special deviceto measure the quantity of radiation in theair.
   科学家使用一种特殊的设备来测量空气中的辐射量。