在伟晶岩接触带,硫化物成分变为黄铜矿 、 针镍矿 、 黄铁矿及硫镍铁矿, 伴生有磁铁矿和赤铁矿.At pegmatite contacts the composition changes to chalcopyrite, millerite, pyrite, and accompanied by magnetite and hematite....
青蛙吃破坏庄稼、传播疾病的害虫。Frogs eat pests which destroy crops and carry diseases.这片潮湿地区也吸引了青蛙、蟾蜍和蝾螈一类的生物。This wet area also attracts frogs, toads and newts.在这个卡通童话里王子变成了一只青蛙。A prince turns into a frog in this cartoon fairytale....
现在，工作在单身女性的生活中起着重要作用。These days work plays an important part in a single woman's life.体育锻炼在疾病防治方面发挥着重要作用。Exercise has a major part to play in preventing and combating disease.数世纪以来，媒人一直在犹太人社区扮演着重要角色。The matchmaker h...
各公司正在把工作岗位转移至生活费用较低的城镇。Companies are moving jobs to towns with a lower cost of living.戴夫急于回到工作岗位。Dave was in a hurry to get back to work.一位工会的谈判人员说那些工作岗位都已经保住了。A union bargainer said that those jobs have been saved....