You would be instantly exposed to very, very low oxygen levels.
你会立刻处于非常，非常低的氧含量下。
In the older rocks below these glacial deposits are detrital uraninite and pyrite two minerals considered evidence for very low levels of atmospheric oxygen.
这些冰河沉积物下方的较老岩层，是沥青铀矿与黄铁矿碎屑；这两种矿物被认定为大气中氧气极为稀少的证据。
Symptoms include very laboured breathing, bluish skin tinge, and low blood oxygen levels.
其特征为呼吸极端困难、皮肤黏膜发绀和动脉血含氧量低。
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