() input: s = "catsandog", worddict = ["cats", "dog", "sand", " 本期问题】tocompareapplesandoranges,是什么意思呢? possibleviolationofnewtoniangravitationallawatsmalldistancesand "this is perfect spot to build sandcastle!"said tex. 你知道bury your head in the sand是什么意思吗?