Crawfish, like shrimp or lobsters, belong to the scientific Crustacea.小龙虾和虾或龙虾一样, 在科学上属于甲壳纲动物.What are the main characteristics of Crustacea?甲壳纲的主要特征是什么?The food composition consisted of eight groups: diatom, protozoa, s...
Medical facilities are being reorganized and upgraded.正在对医疗设施进行重组和升级。She sent her provisional licence with the test certificate to have it upgraded to a full licence.她将临时执照连同考试证书一起提交上去以申请升级为正式执照。You can pay to be upgrade...
He has two half-caste children.他有两个混血孩子。The priestly caste does not normally intermarry with the warrior caste.教士阶级通常不与武土阶级通婚.He was born into the lowest caste.他出生于最低贱的种姓....
衡量某事物的标准a yardstick by which to measure sth在他相信某事物之前要先取得证据.He wanted proof before he would believe something.对某人来说,某事物仍然备受争议.Something remains to be a subject of controversy to sb....
我心事重重地向车子走去。I walked on in a reflective mood to the car.他只顾想着心事，没注意到有什么不对。He was too preoccupied with his own thoughts to notice anything wrong.与咨询员的谈话让他将心事一吐为快.His visit to a counsellor really helped him get thingsoff h...