1·He makes a rigorous study of the plant in the area.
他对该地的植物进行了慎密的研究。
2·He made a rigorous study of the plants in the area.
他对该地区的植物做了周密的考察。
3·But you'll get a rigorous study at little, if any, cost.
但你至少能以零或极少成本获得严格的研究。
4·He made a rigorous study of the plants in the tropical area.
他对热带地区的植物做了周密的研究。
5·In her small but rigorous study, Andrade separated 40 participants into two groups of 20.
在她小型却严谨的研究中，恩德雷德把40位参与者分成两组，各占20人。
6·However, as you approach high school, you will need to begin a more rigorous study of academic English.
然而，随着您进入高中，您就需要开始更加严格地学习学术英语。
7·This rigorous study by Stephan Haggard and Marcus Noland provides an unflinching analytical autopsy of the tragedy.
哈格德与马库斯对此缜密的研究为悲剧提供了坚定的分析解剖。
8·It is the most rigorous study so far on the links between food, physical activity and cancer-and sets out the important sources of risk.
WCRF进行的是迄今为止，对食物、身体锻炼和癌症之间联系最严谨的研究，并解答了癌症风险最重要的原因。
9·It is the most rigorous study so far on the links between food, physical activity and cancer -and sets out the important sources of risk.
这是迄今为止对食品、身体活动与癌症之间的联系最为严肃的研究，而且列出了最重要的风险来源。
10·Proponents of simplified characters say that simplified characters are easier to learn. But I have found no rigorous study that fully proves this.
简体字的倡导者们则认为，简体字更加容易掌握，但是我并没有发现任何严谨的研究能证明这一点。