S. TradeRepresentative'soffice and the EU declined to comment.
美国贸易代表办公室和欧盟都拒绝发表评论。
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"Yes, that is a possible concern," said Nefeterius Mcpherson, a spokeswoman for the U.S. TradeRepresentative'soffice, which is hosting the 10th round of talks this week on the proposed pact.