问题描述：
on a preliminary basis 是何意思?
The U.S.Commerce Department imposed penalty tariffs ranging from 10.9 percent to 20.4 percent on imports of glossy paper from China.The tariffs will take effect next week on a preliminary basis and will become final after a further review by the department is completed in June.
The U.S.Commerce Department imposed penalty tariffs ranging from 10.9 percent to 20.4 percent on imports of glossy paper from China.The tariffs will take effect next week on a preliminary basis and will become final after a further review by the department is completed in June.
问题解答：
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