他说的没错。近年来，李健和宋冬野这样的歌手开始崭露头角，民谣歌曲也开始流行起来。

He was right. Recent years have seen folk songs gaining popularity, with the emergence of singers like li Jian and song Dongye.

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秋末冬初季节，应用孕马血清促性腺激素（PMSG）和人绒毛膜促性腺激素（HCG）对16头经产野母猪进行试验。

The experiments with PMSG and HCG in 16 wild female pigs were conducted in late autumn and early winter.

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