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keep at it 保持住，坚持不懈
例:I know training is very hard, but you keep at it and you will be rewarded.
我知道训练非常难苦，但别放弃你会觉得很值得的.
例：There were losing the game but they kept at it and came back to win in the end.
刚开始比赛没进展，但后来因坚持不懈最终还是取得了胜利.
n. 美术馆，画廊，顶层楼座，狭长的房间
