400. Recent studies show that... 最近研究发现……
Recent studies show that food safety in China still need to be improved.
最近研究发现中国食品安全仍需改进。
Recent studies show that there is an increasing number of students going abroad atan early age.
最近研究发现，越来越多的学生在年纪尚小的时候就出国留学了。
Recent studies show that people's psychological problem is getting more and more serious.
最近研究发现人们的心理问题变得越来越严重。
