尽力设法

1.
be at the pains of
at lowest中文 ... be at the front ||在前线 be at the pains of ||费尽力气, 煞费苦心, 尽力设法 ... be at law ||在诉讼中 ... ...
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2.
be at pains
Be的短语... ... be sick 恶心, 呕吐 be at pains 费尽力气, 煞费苦心, 尽力设法 be on the ball 在精力充沛地行动, 知情, 内行 ...
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