但中途退出实在是不同寻常。
个别的参与者抑郁症状进一步恶化,没有人中途退出。
Few participants developed worsening depression; none dropped out.
中途退出欧元区的成本很难准确计算但是这个代价必然很沉重。
The costs of backing out of the euro are hard to calculate but would certainly be heavy.
I didn't like that. I don't want students to drop out.
我不希望这样,我不希望学生中途退出
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