gravity ring
重力环
以上为机器翻译结果，长、整句建议使用 人工翻译 。
On a lark, Mr. Minsky spent some time "inventing useless things, " he says, such as a "gravity machine, " a device that would ring a bell if the force of gravity changed.
WSJ: Looking for Something Useful to Do With Your Time? Don't Try This
应用推荐
模块上移
模块下移
不移动