solve the difficult maths problem
能够提起他祖母的行李箱 be able to lift his grandmother’s suitcase 解决困难的数学题 solve the difficult maths problem 把她的头发梳成马尾辫 put her hair in a ponytail ..
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solve the difficult maths problem
解决这道难的数学题
以上为机器翻译结果，长、整句建议使用 人工翻译 。