《汉书·传·陈胜项籍传》
项梁从东阿出发，等到达定陶，再次打垮秦军，项羽等人又杀死了李由，更加轻视秦军，显出了骄傲的神色。
梁起东阿，比至定陶，再破秦军，羽等又斩李由，益轻秦，有骄色。
Xiang Liang set out from Dong A, and when he arrived at Dingtao, he beat the Qin army again. Xiang Yu and the others killed Li You, and they scorned the Qin army even more, looking very proud.
<s>[INST] Kindly elucidate the central themes in this passage in English: 梁起东阿，比至定陶，再破秦军，羽等又斩李由，益轻秦，有骄色。 [/INST] Xiang Liang set out from Dong A, and when he arrived at Dingtao, he beat the Qin army again. Xiang Yu and the others killed Li You, and they scorned the Qin army even more, looking very proud.</s>
Kindly elucidate the central themes in this passage in English: 梁起东阿，比至定陶，再破秦军，羽等又斩李由，益轻秦，有骄色。
user
Xiang Liang set out from Dong A, and when he arrived at Dingtao, he beat the Qin army again. Xiang Yu and the others killed Li You, and they scorned the Qin army even more, looking very proud.
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