To roll a heavy stone ring to the right place is a hard work.
把一个大石环滚到合适的地方是一项艰苦的劳动。
Cover the container with a clean piece of wood. Hold the wood down with a heavy stone.
在容器上盖上一块干净的木板,用一块重石把木板压下。
Invited to display it, he lifts a heavy stone slab onto a metal spike in the ground and spins it to a blur with a bamboo stick.
记者邀请他展示一下。他托起一个沉重的石板放在地上的一个金属钉子上,用竹棍使其旋转。
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