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1¡¢night/evening
nightÖ¸the time of darkness between evening and morning;¶øevening Ö¸the time between sunset and bedtime.
2¡¢know/learn/notice
knowÖªµÀ£»ÊìϤ learn Ìý˵£»ÈÏʶµ½£»Á˽â notice ×¢Òâµ½
3¡¢sound/cry/voice/shout/noise