Everett discovered that languages that included ejective consonants were generally spoken at a higher elevation than those that did not.

Everett 发现有爆破辅音的语言比没有的语言，其所在地的海拔更高。

One phoneme that occurs in only about 20 percent of the world's languages is the ejective consonant, such as p' or k'.

有一种音位仅出现在全世界 20% 的语言中——那就是“爆破辅音”，比如“p”或“k”。

He took a sample of 567 languages spoken around the world, and compared the locations and altitudes of those that either contained or ignored ejective consonants.

他提取了全球语言的 567 个样本，对比了这些包含或忽略爆破辅音语言所在地的位置和海拔。

Though he did include some ejective phonemes, voiceless consonants produced with a contracted glottis, like ch'ah and p'ah, similar to those found in real-world languages like Mayan and Chechen.

尽管他确实包含了一些喷出音素，清音辅音是用收缩的声门产生的，比如 ch'ah 和 p'ah， 类似于玛雅语和车臣语等现实世界语言中的辅音。

Everett suggests that the sounds are more popular at altitude because lower air pressure may make it easier to produce the burst of air that is a key characteristic of ejective consonants.

Everett 认为爆破辅音在高海拔地区更常见，是因为低气压能让人更轻松地吐气，而这是爆破辅音的关键特征。

There are many dozens of observed consonants, from the clicks of some African languages to the " ejectives" (which make use of air pressure built up in the mouth) of Caucasian ones.

观察到的辅音有几十种，从一些非洲语言的咔嗒声到高加索语言的“喷出”（利用口腔中建立的气压）。