就是那有声无气的物，或箫、或琴，若发出来的声音没有分别，怎能知道所吹、所弹的是甚么呢？
And even things without life giving sound, whether pipe or harp, except they give a distinction in the sounds, how shall it be known what is piped or harped?
但是夏季饮水也要注意，正确的饮水方法是选择低糖、无碳酸气的饮料，适量多次饮用，尽量不要喝冰水。
Choose non-carbonated, low-sugar drinks instead of ice water.
如今全球正在争先恐后地开采无硫天然气，这种做法短期内也许不能像预期的那样显著改善全球气候。
The near-term climate benefits of a global dash for sulphur-free gas may thus be smaller than might be expected.
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