Gas is a source of @n@@@y(填充題)

用戶6485

2007-08-11 11:15 pm

S1 homework!!!!!

回答 (1)

恩恩

2007-08-11 11:42 pm

✔ 最佳答案

Gas is a source of energy.
Gas: 煤氣/天然氣
Source of energy: 能量的來源

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