A perennial is a plant that lives indefinitely.多年生植物是指能存活很多年的植物。the perennial problem of water shortage缺水这个老问题I wonder at her perennial youthfulness.我对她青春常驻感到惊讶....
分离的时候到了,他们紧抱着不肯分开.They clung together when the time came to part.孩子紧抱着她的洋娃娃.The child is hugging her doll.小孩紧抱着洋娃娃.The child clasped the doll tightly....
Relative rates of house price inflation have evened out across the country.房价相对上涨率已经在全国达到平衡。Odds have evened between the champions.争夺冠军的两名选手得胜的机会均等.She evened the edges by trimming them.她把边缘修齐....
degenerative diseases such as arthritis诸如关节炎之类的变性病Parkinson s disease ( PD ) is a degenerative disorder characterized by a loss of midbrain dopamine ( DA ) neurons.帕金森病 ( PD ) 是一种以中脑多巴胺神经元丢失为特征的 中枢神经 系统退行性疾病....degenerat...