This includes methane hydrate crystals, which can form molasses-like goop and plug a pipe.

这其中包括甲烷水合晶体，这种晶体可形成糖浆一样的黏糊，堵塞管道。

Then there are minerals that might form often enough, but don’t stick around for very long -- methane hydrate crystals, for example, will just dissolve in air at standard pressure.

还有一些矿物质可能会经常形成，但不会停留很长时间——例如， 甲烷水合物晶体只会在标准压力下溶解在空气中。