Zuò huǒchē de shíhou, chēxiāng lǐ dàochù dōu shì pàomiàn de wèidao.
On the train, the whole carriage smells of instant noodles.
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泡面 'soak noodles' is named for how you make them: pour boiling water over them and wait three minutes. It is the most colloquial name everywhere; 方便面 is the standard mainland word, and 速食面 is common in Taiwan and Hong Kong.