Only four positions were found possible without "mechanical assistance". The other six needed a special elastic belt and inflatable tunnel, like an open-ended sleeping bag.

只有四个姿势被发现在不借助“辅助器械”下可能实现。另外六个需要借助特殊的弹性带和同一端开口的睡袋一样的可膨胀的管道。

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Only four positions were found possible without "mechanical assistance". The other six needed a special elastic belt and inflatable tunnel, like an open-ended sleeping bag.

只有四个姿势被发现在不借助“辅助器械”下可能实现。另外六个需要借助特殊的弹性带和同一端开口的睡袋一样的可膨胀的管道。

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