n.门槛；开端；界限；入口
The treaty will be the threshold of lasting peace. 这个条约将成为持久和平的开端。
He was on the threshold of his career. 他的事业刚刚起步。
The tax threshold for a pensioner is $6,000. 领退休金的人的纳税起点是六千美元。
He had never crossed the threshold of a bar before. 他过去从未进过酒吧的门。
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