Variable speed, reversible action Load capacity of 100 LBS per sq ft. Retracts for storage Portable, expandable, configurable.

变速，可逆操作载重量为100磅每平方尺缩回存储便携式，可扩展，可配置。

youdao

To implement what Cooper suggests, developers need to make each action that the user performs reversible, which is both costly and in my opinion, not needed.

想要实现Cooper的建议，开发者需要让用户执行的每一个操作可逆，这样做不仅代价高，而且在我来看也不是很必要。

youdao