Stones: solid, offering a strong, sound, powerful, unconquerable and unshakable feelings.

石：固体，给人坚定、稳固、力量、不可战胜、不可动摇的感觉。

youdao

Love is the sun, and rain is love, love is tolerance, love, a responsibility, love is unconquerable strength and courage.

爱是阳光，爱是雨露，爱是宽容，爱是责任，爱是不可战胜的力量和勇气。

youdao

But the problems to plagiarists are unconquerable while our problems are easy to overcome since we are the force with a bright future.

我们的困难是能够克服的确，因为我们是有光明前途的势力。

youdao

Clara Furse's ravishing--but hitherto unconquerable--London Stock Exchange is hardly sitting a corner crying heigh ho!

FORBES