气象预报说德国周末将会出现零度以下的气温。
Weather forecasters predict subzero temperatures for the end of the week in Germany. (AP Photo/Frank Augstein)
这种膨胀能够导致空气温度降到零度以下的程度。
This expansion can cause the temperature of the air to drop to sub-zero levels.
有研究表明，在零度以下的空气里跑步不会对肺部有任何损害。
SOLUTION Research has shown that running in temperatures below zero won't harm your lungs.
应用推荐