It is a very pretty butterfly, with a 2 inch wing span.这是一只非常美丽的蝴蝶，翼展2英寸。She's like a butterfly. She flits in and out of people's lives.她像一只蝴蝶，每天在人前人后飞来飞去。the life cycle of the butterfly蝴蝶的生活周期...
Before the race, he is fine. But afterwards he is worn out.赛前他状态很好，赛后就筋疲力尽了。To use a well-worn cliche, it is packed with information.说得老套一点，其内容翔实。The flagstones beneath their feet were worn smooth by centuries of use.他们脚...
I felt a sharp pain in my lower back.我感觉到后腰一阵剧痛。Basal metabolism is much lower for creatures in cold water.冷水中生物的基础代谢速度要低很多。Companies are moving jobs to towns with a lower cost of living.各公司正在把工作岗位转移至生活费用较低的城镇。...