装了假肢，他起初走路走不稳，但经过锻炼他的步子稳了。
Fitted with artificial legs, he walked unsteadily at first, but his steps grew steady with practice.
完成这个阶段后，它们还要经过锻炼来增加自己的强度，也就是为它们提供一些健身器材。
When they have done so, they are encouraged to exercise and build up their strength by being given their own gym equipment.
在很多情况下，排除严重的内分泌失调，这些感受的最根本物质是痴迷心，而且经过锻炼痴迷心是可以用在好处的。
In most of these cases, barring severe chemical imbalances, the raw material here is obsession, and with practice obsession is harnessable for good.
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