The next heaviest element in the periodic table, the inert gas helium, is used for detecting cracks in pressure vessels and the like.
而在周期表里此行最重的元素，惰性气体氦，用于压力舱那类东西的小裂缝。
2
Every extra dollar they have to spend because of high gas prices is one less dollar they can use to put food on the table, pay the rent or meet [pay] their mortgages.
他们为高昂的汽油价格每多支付一美元，就意味着为食物，房租或是房贷少支付一美元。
3
Now, we'll slip the tinfoil between the disc and the plate glass top of the table showing that there is indeed a space, a thin film of gas between the disc and the glass upon which it's resting.