they could have completed this work
他们本可以完成这项工作的
以上为机器翻译结果，长、整句建议使用 人工翻译 。
I am particularly indebted to my father and mother, who encouraged me to persist and gave me the best they could offer. Without all the support, I could not have completed this tough work.
我还要感谢我的父母，他们的鼓励给我坚持的力量，没有他们的支持，我就没有坚持下去的勇气。
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