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- The Australasian Quaternary Association (AQUA) promotes the discussion and dissemination of information and ideas within the various disciplines related to quaternary studies. 澳大利亚第四纪协会（AQUA）的目标是促进与第四纪研究相关的不同学科领域的信息和思想的交流与传播。
- Caran has been a research geologist at the University of Texas at Austin, specializing in Quaternary studies, and is currently president of Quaternary Analysis Laboratories in Austin. 卡蓝在美国德州大学奥斯丁分校担任过研究地质学者，专长是第四纪研究，目前是奥斯丁分校第四纪分析实验室的主任。
- He showed us four case studies of disturbed girls. 他给我们看了4位精神失常姑娘的病历。
- He studies more diligently than his friend. 他比他的朋友更勤奋地学习。
- He made rapid progress in his studies. 他学习上进步很快。
- He is a naturalist who studies animals and plants. 他是个研究动植物的博物学家。
- She studies three times as hard as I. 她用功的程度是我的三倍。
- The warm weather seduced me away from my studies. 暖和的天气诱使我放下了学习。
- Their students are diligent about their studies. 他们的学生勤奋学习。
- The Quaternary sediments are largely undeformed. 第四纪的沉积物大部分未变形。
- Some of them are engaged in advanced studies. 他们有些人在进行高级研究工作。
- Cationics are usually quaternary ammomium salts. 阳离子表面活性剂通常为季铵盐类。
- City planning and allied studies. 城市规划和相关研究。
- She is pursuing her studies at the university. 她在大学继续深造。
- He spends very little time on his studies. 他在学习上花的时间甚少。
- He studies more than three times as hard as I. 他用功的程度是我的三倍还不止。
- He studies no less hard than John. 他和约翰一样用功。
- My professor studies flora of the Palaeozoic Era. 我的教授研究古生代的植物群。
- The professor is engaged in advanced studies. 该教授正进行高深的学术研究。
- Design of quaternary Schmitt circuits. 四值施密特电路设计。
