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今天读报纸,其中有的句子中的词组不知道什么意思,各位大虾,帮忙解决下~~
1.Minister of Education Zhou Ji attend a news conference on the sidelines of the 17th National Congress of the Communist Party of China.
其中的on the sidelines
2.The inflation spike has been blamed on double-digit rises in food prices.
其中的spike和inflation放一起,什么意思
3.Sports Science could herald a sea change for China's Olympians.
其中的sea change
4.I was surprised to read reports about "played-up" hidden ecological dangers.
其中的played-up,在句中什么意思
暂时这4个,麻烦了~~