HSK 7-9
Tā yì jiǎng qǐ wǎngshì jiù pǎo yěmǎ, bàntiān huí búdào zhèngtí.
Once he starts talking about old times, his mind just runs wild and he can't get back to the point.
HSK 7-9
Xiě wénzhāng zuì jì pǎo yěmǎ, sīlù yào qīngxī.
In writing, nothing's worse than letting your thoughts ramble off; you need a clear line of reasoning.
