出于这个原因，嫦娥四号将研究太阳风对月球表面的影响，以及航天器发现的任何矿物。

For this reason, Chang'e 4 will study the effect of solar winds on the lunar surface and any mineral found by the spacecraft.

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研究发现，四到八年级的优秀教师以一种可以持续数十年的方式提高了学生们的技能。

The study found that strong teachers in the fourth through eighth grades raised the skills of their students in ways that would last for decades.

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欧洲的研究人员研究了源于四个物种的493只蝙蝠。

The European researchers studied 493 bats from four bat species.

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It shows an assessment of reading proficiency levels in fourth grade.

这项研究对,四年级同学的阅读熟练程度。

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These studies were done in France with four-day-old babies.

这些实验在法国对四天大的婴儿进了研究

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