Tariffs are commonly levied in one of two ways: ad valor em tariff or specifictariff.
关税通常以下列两种方式的一种征收：从价关税或从量关税。
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Should the U. S. roll out specifictariff plans, China would carefully assess them and react accordingly, Gao said.
如果美国推出具体关税计划，中国会仔细评估并做出相应的反应。
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Your fare will be calculated in accordance with our Tariff in effect on the date of payment of your ticket for travel on the specific dates and itinerary shown on the Ticket.