() 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?