随加工程度而增加的关税被认为是一大原因，例如。
Tariffs that increase with the degree of processing are identified as a significant cause.
要知道当时美国的关税已处于高水平，其他国家也已着手增加本国关税水平。
America's tariffs were already high, and some other countries were already increasing their own.
我认为第一步是要废除关税以增加贸易额。
I think the first step is to lift tariffs to increase trade.
WEEE更象是关税壁垒，犹如一堵无形的墙增加你的支出。
WEEE more like the tariff wall, the invisible wall to increase your cost.
WEEE更象是关税壁垒，犹如一堵无形的墙增加你的支出。
WEEE more like the tariff wall, the invisible wall to increase your cost.
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