Water is the natural medium in which most fish live.

水是鱼类生活的自然环境.

《简明英汉词典》

A fish in water is in its natural medium.

鱼在水中,自得其所.

辞典例句

Water is the natural medium in which fish live.

水是鱼类赖以生存的自然环境.

辞典例句

The Human serum is often used in the cell culture essential for natural medium.

人血清可用于需要天然培养基的细胞培养.

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