方向遍历顺序说明下一个倒序（从右往左）先处理右侧，栈里存「右侧候选」上一个正序（从左往右）先处理左侧，栈里存「左侧候选」
Rotom is not, in and of itself, a living inanimate object. It's more like a living spark of electricity. It has no evolutionary tree, but it does learn to inhabit a variety of household objects, gaining different abilities. At different points in the series, Rotom has been a microwave, a washing machine, and a lawn mower, and it has even served as the basis for smartphones in modern Pokémon video games.
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Израиль нанес удар по Ирану09:28
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Мощный удар Израиля по Ирану попал на видео09:41。业内人士推荐Line官方版本下载作为进阶阅读