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1. The treaty is set to expire on February 5.
(be) set to 被定在
Be set to leave by 10 o'clock.
做好准备，最晚10点钟走。
2. The United States remains clear-eyed about the challenges Russia presents, however, and the potential for arms control to contend with China’s rapidly growing nuclear arsenal.
clear-eyed 有洞察力的;头脑清晰的
Defence starts with a clear-eyed assessment of what technology is likely to prove the most vital.
实施防御，首先需对哪些技术可能证明最为重要进行清醒的评估。
