The letter ended on a cheerful note.
这封信以乐观的口气收尾。
May this Christmas be bright and cheerful and may the New Year begin on a prosperous note!
愿圣诞节快乐美好，并愿您在新的一年中有一个美好的开始！
Cheerful people may also sleep better, or may be more successful at quitting smoking than their less joyous counterparts, the researchers note.
乐观的人睡眠也好，也比那些不大快乐的人较易戒烟，研究员认为。
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