a tree has its root a stream has its source是什么意思

a bit是什么意思a bit of是什么意思a bit of a是什么意思

auctioneereachswotdeclinedbooleanmetricgc是什么意思崎岖的意思pass是什么意思math原来如此英语analyticbufferkrisram是什么enablenonprofit

a tree has its root a stream has its sourcecravenly cling to life instead of braving deathGoing beyond the limit is as bad as falling shortThe sea is boiling and the mountains are shakingregular and uneventful journey providing a service