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1.jump through hoops 越过层层关卡，经受磨难
And he had to jump through hoops to be treated fairly.
他为了得到公平对待历尽艰辛。
2.dip your toes in sth 谨慎尝试某事
Many investors are waiting for steeper falls before they dip their toes in again.
许多投资者都在等待市场进一步下跌，然后再试探性地进场。
n. 数组，(陈)排列，大批，一系列
vt.
