About 15 percent of athletes even in a cool environment have body temperatures above 40 degrees Celsius.

" 即使身处凉爽环境，约15%的运动员体温会超过40摄氏度。"

The U.S. National Weather Service says firefighters will have to deal with temperatures as high as 43 degrees Celsius over the next few days.

美国国家气象局表示，未来几天消防员将面临43摄氏度的高温。

So Doctors Without Borders is urging drug makers to test vaccines to see whether they can be kept at temperatures up to 40 degrees Celsius.

因此无国界医生组织敦促药品制造商对疫苗进行测试，看是否能在40摄氏度以上的温度下保存疫苗。