You want to get your sweetheart a gift that says, "you're Special," but ideally, not those actual words spelled out in heart-shaped letters on a Mylar balloon held by a teddy bear.

你想给爱人献上一份代表着“你最特别”的礼物吗？但绝对不是把这四个字直接写在心形的氢气球让泰迪熊送上门。

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The idea of inflatable spacecraft is not new. The Echo I - NASA's first communication satellite - was essentially 100-foot-wide Mylar balloon that reflected radio transmissions from the ground.

充气式航天器并不是什么新颖的想法，NASA的第一颗通讯卫星回声1号实际上就是一个宽30米的聚酯薄膜大气球，它是用来发射来自地面的无线电广播的。

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He left the defense industry, and went on to invent the Mylar balloon, an improved version of Liquid Paper, and Kinepak, a kind of explosive that reduces the risk of accidental detonation.

NEWYORKER: Trial by Fire