| EXAMPLE SENTENCES | ||
|---|---|---|
大多数蝙蝠通过回声定位飞行。 Most bats navigate by echolocation. | ||
蝙蝠通过一种回声定位来判断距离。 The bat judges distance by a kind of echolocation. | ||
对于依赖回声定位系统导航的鲸鱼物种来说，这种海滩意味着灾难。 For whale species that depend on an echolocation system to navigate, this kind of beach spells disaster. | ||
在风暴期间和之后，使用回声定位的鲸鱼基本上是在盲目游动。 During and after a storm, echolocating whales are essentially swimming blind. | ||
在蝙蝠回声定位的选择压力下，夜间活动的蛾类进化出一系列防御、逃避等适应性特征。 Under the selective pressure of bats, nocturnal moths have evolved many adaptive traits to defense and evade bats. | ||
尽管在个头和外观上都与布氏菊头蝠十分相似，但是它们的鼻子构造不同，因而其回声定位频率截然不同。 Although very similar in size and general appearance to R. blasii, the horseshoe (nasal) structure differs and it calls at a completely different echolocation frequency. | ||
鳍状前肢宽大，背鳍退化（较大的背鳍在狭窄处会造成阻碍）小眼睛——因为他们可利用回声，精确定位河泥里的猎物。 They also have broad flippers, a reduced dorsal fin (a larger one would just get in the way in tight spots), and small eyes—echolocation helps them pinpoint prey in muddy water. | ||
从山岭传来呼唤的回声。 The cry echoed back from the mountain. | ||
回声从圆形的墙壁上传回。 The echo rebounded from the round wall. | ||
这时，使用回声测深法将遇到困难。 In that case, it is difficult to apply the acoustic well-sounding(AWS)method. | ||
