不自然的

The stiffness and self-consciousness soon disappeared.

不自然和害羞的感觉不久便消失了。

Teetotalism is against nature. Like a bishop waiting at a bus stop or a hen laying eggs at midnight.

滴酒不沾是违背自然的，就象一个主教在汽车站等车或者一母鸡在半夜下蛋一样。