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....
Description: Perennial herbaceous vines, with milky juice , glabrous throughout.形态特徵: 多年生草质藤本, 全体无毛, 有乳汁.Lythrum salicaria is a perennial herb , its root system is a fibrous like tap root system.千屈菜lythrumsalicaria为多年生宿根...
Menstruation may cease when a woman is anywhere between forty-five and fifty years of age.女性停经是在45至50岁期间。Women enjoy special protection during menstruation, pregnancy , child birth and baby nursing period.妇女在经期 、 孕期 、 产期...
The papers in maths and English are very testing.数学试卷和英语试卷很难。If your skin becomes red, sore or very scaly, consult your doctor.如果皮肤发红、瘙痒或脱皮，要向医生咨询。There has been a very mixed reaction to the decision.对于这个决定的反应非常不一致。...
However, there shall be no such exoneration of the Fund with regard to preventivemeasures.如果在本公约三个缔约国的领土内的人所接收的有关摊款油类总量在 前 一日历年度等于或超过6亿吨,则不论发生何种事故, 也不论何时发生事故,第和第项所述的最高赔偿金额应为2亿计算单位....