达到艺术训练员躺在空气垫上的状态不意味着你正在跑步。
Getting really state of the art trainers with air cushions on the bottom doesn't mean that you are actually running.
野营的饭食不是大问题，床也不是。多亏了空气垫和睡袋。
Camp meals are no great problem. Neither are beds, thanks to air mattresses and sleeping bags.
论述了新的装药结构-底部空气垫层装药结构的特点和爆破原理。
A new loading structure-bottom air cushion loading is described together with its specialities and blasting principle.
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