A volcanic vent is a place on the Earth's surface where lava or gas can escape.

喷口地球表面熔或气体逸出的地方。

Spectrometers can analyze gases escaping magma.

光谱仪可以分析逸出浆的气体。

If the rocks are volcanic, they could be tiny vessels left over from gases that escaped, called vesicles.

如果，可能逸出的气体遗留下来的微小容器，称为囊泡。

And when you tilt your glass while you pour your beer, you’re stopping most of the remaining gas from escaping.

如果您在倒啤酒时倾斜玻璃杯，就可以阻止大部分剩余气体逸出。

Same as when you're boiling a pot of water, when it goes from cold to hot and it bubbles, you start to see the gases come off.

和煮一壶水一样，从冷到热，会冒气泡，你可以看到气体逸出。