U.S. officials said the Stethem was carrying out a regular " right of innocent passage" exercise.
美国官员表示，史蒂芬号正在进行定期的“无害通过权”演习。
英语百科
Innocent passage
Innocent passage (IP) is a concept in the law of the sea which allows for a vessel to pass through the territorial waters of another state subject to certain restrictions. The United Nations Convention on the Law of the Sea defines innocent passage as: