He is merely throwing the idea forward for discussion, it is not cast in stone.

他只是抛出个想法供讨论，不是固定不变的。

《柯林斯英汉双解大词典》

Like this again, the stone turn forward again.

像这样又冲击，石头又会再次向前翻转。

youdao

Stop you move forward, not one hundred stone on the road of life, but that a pebble in your shoe.

阻止你前行的，不是人生道路上的一百块石头，而是你鞋子里的那一颗石子。

youdao

"We've not thought beyond the World Cup, " insists the 5ft 10in, 14-stone Bristol forward.

BBC: England captain sacrifices all for World Cup glory bid

To be sure, the discovery of metallurgy was a huge leap forward in technology, but stone tools are sophisticated in design in their own right.

FORBES: The First Human Technology

Harinordoquy found 18-stone Bastareaud charging forward at his left shoulder and the 21-year-old evaded a desperate tackle by Kelly Brown to claim his second try of the game.

BBC: Scotland 9-18 France