用dangerous gas造句子，“dangerous gas”造句

Could a dangerous gas buildup at the bottom of the ocean bubble up and wipe out most life on Earth?

By inserting long tubes down to the lake bottom, the gas-filled water siphons up to the surface, venting the dangerous gas.

In 1984 there was a serious accident at a factory in India and a cloud of dangerous gas covered the town of Bhopal.

Workers in chemical factories breathe in dangerous gases every day