The song duration showed significant difference between different sites at the same season.

同一季节异地间鸣叫持续时间差异显著。

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At least 80% of the submitted song must be in Chinese (in terms of lyrics and duration), while the remaining 20% can be in other languages.

参赛作品必须以华语为主，即必须至少80%华语，20%可以以其他语言演绎。

youdao

At least 80% of the submitted song must be in Chinese (in terms of lyrics and duration), while the remaining 20% can be in other languages.

参赛作品必须以华语为主，即必须至少80%华语，20%可以以其他语言演绎。

youdao