But only liquid volcanic argon will do the trick.

但只有液态的火山氩气能完成这把戏。

If these were cubes of solid argon in a cup of liquid argon, they would sink.

如果这些冰块是固体氩气做成的，被放入一杯液体氩气中，他们就会下沉。

It contains 3600 kilograms of liquid argon, cooled to -180 degrees Celsius.

它包含 3600 公斤液态氩，冷却至 -180 摄氏度。