例句與造句

1. High-purity streams of the gas require lecture bottles or cylinders, both of which can be expensive.
2. Plunkett further relates that the cylinders of TFE being used contained about 1 kg each ( 2.2 pounds ) which would be relatively small, lecture bottle sized cylinders, not large cylinders.
3. It's difficult to find lecture bottle in a sentence. 用lecture bottle造句挺難的