C-2：catch-22 左右为难之境
A:Why not continue your schooling? You've to get a diploma to earn more money.
A:为什么不继续上学呢？要赚更多的钱就要有文凭。
B:But I need more money before I go to school.
B:但是我现在没钱上学。
A:It's really a catch-22.
A:这可真是左右为难呀。
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