a train of = a series of 一系列 without the least effort 不费吹灰之力 drew up 拖 ..
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without the least effort
毫不费力
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The 2 cities have come into Liu Xuande's possession without the least effort on his part.
二处城池，全不费力，皆属刘玄德矣。
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