When it is raining, one lungful of air will often have a few per cent less oxygen than on an average day - a larger reduction than in our pessimistic scenario above.
当天下雨时，空气中就会比平时含有更少的氧气——比我们悲观估计的下降幅度更大。
One day the family went to see a baseball game of an older brother. It was cloudy and by the time they got to the field it started raining.
一天，一家人去看一个兄长的棒球比赛，天气阴沉，当他们到达赛场的时候开始下雨了。
One day the family went to see a baseball game of an older brother. It was cloudy and by the time they got to the field it started raining.
一天，一家人去看一个兄长的棒球比赛，天气阴沉，当他们到达赛场的时候开始下雨了。
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