美国说，两架俄罗斯攻击机在位于国际水域的美国驱逐舰唐纳德·库克号附近进行了约20次飞越。
The U. S. says two Russian attack aircraft flew around 20 passes near the USS Donald Cook while the ship was in international waters.
俄罗斯军机本周两天近距离飞越波罗的海的一艘美国驱逐舰并进行模拟攻击飞行，美国对此表示关注。
The U. S. expressed concern over Russian military aircraft flying apparent simulated attack passes near a U. S. destroyer in the Baltic Sea over the course of two days this week.
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