用简单的英语解释下列句子1.He can sing many English sogs.2.Sometimes the
用简单的英语解释下列句子
1.He can sing many English sogs.
2.Sometimes the old man was strange.
3.Without water or air,man can' t live.
4.His voice often cannot be clearly heard.
5.About two thirds of the earth is covered by water.