您要查找的是不是：
- The cabin has a flat stone for a threshold. 这间小屋用一条扁平的石头做门槛。
- 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。
- He had never crossed the threshold of a bar before. 他过去从未进过酒吧的门。
- He varied the transmission frequency. 他变换了无线电传送的频率。
- Scientists are now on the threshold of an important discovery. 科学家们很快就会有一项重大发现。
- A unit of frequency equal to one cycle per second. 赫兹频率的单位，等于每秒一周
- Fatal accidents have decreased in frequency over recent years. 近年来死亡事故发生的频率已经下降。
- The tax threshold for a single pensioner is 450 dollars. 单身养老金领取者的征税起点是450美元。
- The court is not legally justified in stopping at the threshold of the case. 一开始就使案件停止不前，法院这样做是完全不合法的。
- We can often correlate age with frequency of illness. 年龄的大小往往与发病率有关。
- They are at the threshold of a new career. 他们正要开始干一番新的事业。
- Accidents on that highway are happening with increasing frequency. 那条高速公路上车祸发生得越来越频繁。
- threshold frequency 门限频率,界限频率,阈频率,监界频率,阈频,临界频率
- There must be a threshold of thermal noise. 必有一个热噪声的门限值。
- He tuned his radio to the police frequency. 他把无线电调到警方的频率。
- He is on the threshold of success. 他即将成功。
- He was at the threshold of his career. 他的事业才开始。
- There is a hamlet on the threshold of a cajon. 狭谷口有个小村庄。
- He has never crossed the threshold of a bar before. 他过去从未进过酒吧的门。
