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1·The switch comes despite implied assurances over the years that the agency would continue to buy American whenever possible.

尽管这些年来美国国际开发署一直暗示，只要有可能都会购买美国货，但该机构还是做出购买外国货的决定。

2·Both express authority and implied authority can create agency.

委托代理明示授权和默示授权都能产生代理。

3·Both express authority and implied authority can create agency.

明示授权和默示授权都能产生代理。