míngchèn: tái xiǎn zuò wéi kōng qì wū rǎn chéng dù de zhǐ shì zhí wù Moss as an indication of the degree of air pollution plant xiàngguāncítiáo: tái xiǎn : zuò wéi kōng qì wū rǎn chéng dù de zhǐ shì zhí wù xiàngguāntúpiàn: tái xiǎn zuò wéi kōng qì wū rǎn chéng dù de zhǐ shì zhí wù Moss as an indication of the degree of air pollution plant zīliàoláiyuán: http://big5.qstheory.cn/ túpiànmiáoshù: 　　dà qì wū rǎn zhǐ shì shēng wù zhī duō shǎo？ _ huán jìng bǎo hù _ qiú shì lǐ lùn wǎng 3 cháng jiàn zhǐ shì zhí wù yòu nǎ xiē？ dì / 3 túpiàn               huàndēngpiàn

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