n. 1.门槛；入口，门口。 2.【心理学】阈限。 3.界限，限度。 4.【物理学】临界值，阈。 5.入门，开始，开端。 短语和例子 Seniors of the threshold of the diplomatic career are expected to take this course. 希望即将从事外交工作的四年级生选修本课程。 at the threshold of 在…的开始，就要开始的时候。 cross sb.'s threshold 走进某人家里。 cross the threshold 跨进门内。 on the threshold 在门口。 on the threshold of 在…的开头，就要…。
the sill of a door; a horizontal piece of wood or stone that forms the bottom of a doorway and offers support when passing through a doorway 同义词：doorsill, doorstep,
the entrance (the space in a wall) through which you enter or leave a room or building; the space that a door can close; "he stuck his head in the doorway" 同义词：doorway, door, room access,
the smallest detectable sensation 同义词：limen,
a region marking a boundary 同义词：brink, verge,
the starting point for a new state or experience; "on the threshold of manhood"
例句与用法
1.
There must be a threshold of thermal noise . 必有一个热噪声的门限值。
2.
You are just on the threshold of life . 你不过刚踏上人生的道路。
3.
This country is on the threshold of prosperity . 这个国家即将进入繁荣之境。
4.
To check this, we turn down the threshold level . 为了检验这一点，我们把阀值调低。
5.
On the threshold he paused a moment, feeling for his latch-key . 他在大门口站定，摸找钥匙。
6.
The lower curve marks the exclusion threshold for data pairs . 下部曲线标志出对数据对的排除域。
7.
The gain is now well above the (lowered) oscillation threshold . 此时，增益大大超过（降低了的）振荡阈值。
8.
Both the dual and complement of such functions are also threshold function . 一个函数的对偶及都是临界值函数。
9.
She was transfixed upon the threshold by a spectacle which held her there . 她被一个场面慑住僵在门槛上不会动了。
10.
The value of the threshold strain is determined by calibrating the coating . 阈值应变的数值是靠对涂层进行标定测出来的。
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