翻译 a sharp crack of a twig

翻译 a sharp crack of a twig a gram of crack中的crack是什么意思 the sharp knife of a short life翻译 crack a 这个如何翻译：a sharp decline in the value of securities There has been a sharp rise in the cost of living翻译 crack open a bottle of wine中的crack和open是什么关系? crack like怎么翻译 a sharp front outline of plan sharp 该怎么翻译呢 crack-a-lackin是什么意思 crack-a-lacking是什么意思? have a crack at the crack of down sharp images怎么翻译? After a f____ of lighting,there comes a loud crack of thunder crack 英语翻译crack breathing 或 breathing crack 的翻译~