回答-----jiangwen999， 请看如下美国官网的数据

https://www.census.gov/foreign-trade/statistics/highlights/toppartners.html

Data are goods only, on a Census Basis, in billions of dollars, unrevised.

Rank	Country	Exports	Imports	Total Trade	Percent of Total Trade
---	Total, All Countries	1,204.4	1,813.8	3,018.2	100.0%
---	Total, Top 15 Countries	846.3	1,414.0	2,260.3	74.9%
1	China	92.0	380.8	472.8	15.7%
2	Canada