翻译几个小词好吗 在下英语太烂了：焦虑 难能可贵 补充和完善 集中精力

焦虑 angst

难能可贵 one in a thousand

补充 完善 complementarity consummate

集中精力 concentrate

焦虑 anxious, misgiving, deeply worried.
难能可贵 rare, one in a thousand
补充 完善 replenishment, complementary
集中精力 concentrate