参与者戴面罩(面罩上有测量装置)，研究员可以测量他们的氧气消耗量。

The participants also wore face masks that enabled the researchers to measure their oxygen consumption.

youdao

参与者戴面罩(面罩上有测量装置)，研究员可以测量他们的氧气消耗量。

The participants also wore face masks that enabled the researchers to measure their oxygen consumption.

youdao