裁判判定投手犯规，因为他做了一个欺骗性动作。
The umpire called a ___balk because the pitcher made a deceptive move.
她本想尝试蹦极，但在最后一刻退缩了。
She wanted to try bungee jumping, but ___balked at the last second.
他犹豫着不愿接受这个冒险的商业计划。
He was ___balking at accepting the risky business proposal.
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