threshold
n. 门槛，门口；阈，界，起始点；开端，起点，入门；机场跑道入口，跑道头
例句
He stepped across the threshold.
他迈过门槛。
《牛津词典》
She felt as though she was on the threshold of a new life.
她觉得好像就要开始新生活了。
The threshold for regulation is high.
监管的门槛很高。
