1. These sounds are generally emitted through the mouth, but Horseshoe and leaf-nosed bats emit their echolocation calls through their nostrils, there they have basal fleshy horseshoe or leaf-like structures that are well adapted to function as megaphones.
2. Echolocation is a highly technical and interesting tactic.
回声定位是一项具有高度技术性和趣味性的手段。
-- 来源 -- science - 汉英
3. Echolocation, the active use of sonar along with special morphological and physiological adaptations, allows bats to "see" the world with sound.
主动应用声纳并与特殊形态学和生理学调节结合在一起的回声定位，使蝙蝠能用声音来“看”这个世界。
-- 来源 -- science - 汉英
4. Some bats have specialized structures for emitting echolocation calls.
一些蝙蝠已经把用于发出回声定位叫声的结构专门化了。
-- 来源 -- science - 汉英
5. Most bats produce echolocation sounds by contracting their larynx.
大多数蝙蝠通过收缩喉咙所发出的声音实现回声定位。
-- 来源 -- science - 汉英
6. Echolocation calls are usually ultrasonic ranging in frequency from 20 to 200 kilohertz (kHz), whereas human hearing normally tops out at around 20 kHz.
用于回声定位的叫声一般是20－200千赫之间的超声波，而人所能听到的最高频率在20千赫左右。
-- 来源 -- science - 汉英
7. In general, echolocation calls are characterized by their frequency, intensity in decibels (dB), and duration in milliseconds (ms) .
一般来说，用于回声定位的叫声是用它们的频率、强度（分贝）以及持续时间（毫秒）来表示特征的。
-- 来源 -- science - 汉英
8. Most Bats use echolocation to orient themselves and find prey. Wingspreads vary among species from 6 in. (15 cm) to 5 ft (1.5 m).
蝙蝠多藉回声定位捕食,体型大小差异极大,翼展从15公分～1.5公尺都有。
-- 来源 -- 英汉 - 翻译样例 - 生命
9. In terms of pitch, bats produce echolocation calls with both constant frequencies and varying frequencies that are frequently modulated.
关于音调，蝙蝠用恒定频率和频繁调整的变化频率发出回声定位的叫声。
-- 来源 -- science - 汉英
10. Any of various nocturnal flying mammals of the order Chiroptera, having membranous wings that extend from the forelimbs to the hind limbs or tail and anatomical adaptations for echolocation, by which they navigate and hunt prey.
