例句與造句

1. Current estimates are that less than half of all mercury deposition within the U . S . comes from U . S . sources.
2. Acid rain and mercury deposition do major environmental damage in the Northeast, from Vermont forests killed by high acidity to scores of lakes and streams where the fish are unsafe to eat due to high mercury levels.
3. Another example is the so-called " polar sunrise mercury depletion incidence ", where the transformation of elemental mercury to divalent mercury is influenced by increased solar activity and the presence of ice crystals, resulting in a substantial increase in mercury deposition during a three-month period ( approximately March to June ).
4. It's difficult to find mercury deposition in a sentence. 用mercury deposition造句挺難的