This echo-location in bats is often compared with radar, the principle of which is similar.
蝙蝠这种回声定位常常可与雷达相比较，其原理是相似的。
新概念英语第四册
Lesson 7 Bats
📚 句中词汇解析
从本句中提取的重要词汇
n. 回声，共鸣;（言语、作风、思想等的）重复;重复者;[无线电]回波;
vt. 重复，效仿;随声附和;类似;发射（声音等）;
vi. 被重复;产生回响;充满回声;
💡 echo-, ech- 表示”声音 ,噪音”;特备是”回声”;”重复,模仿”
"There was an echo on the line and I couldn't hear clearly."
电话里有回音，我听不清楚。
近义：repeat, reecho, resonate, resound, reverberate, boom
n. 位置，场所;定位;外景（拍摄地）;
💡 loc 地方 + ation 行为、状态、过程 → n.位置，场所
"a honeymoon in a secret location"
在一个秘密地点度的蜜月
近义：locality, place, position, site, siting, whereabouts
n. 原则，原理;准则，道义;道德标准;本能;
💡 prim, prin 表”首先的,领头的”
"They are agreed in principle but not in detail."
他们的看法在大体上是一致的,但是在细节上有所不同.
近义：law, axiom, rule, tenet, motive, point
adj. 类似的;同类的;相似的;同样的;
n. 类似物;相像的人;相似物;
💡 simil一样+ar...的 →同样的，相似的
"The basic design of the car is very similar to that of earlier models."
这种汽车的基本设计与早期的样式非常相似。
近义：interchangeable, kindred, like, matched, matching, parallel
反义：heterogeneous, inharmonious, irregular, assorted, asymmetric, asymmetrical
adv. 常常;经常;时常;再三;
💡 十(ten)有八九的(of)， 经常的
"Sleep has often been thought of as being in some way analogous to death."
人们常常认为睡眠在某种意义上来说类似死亡。
近义：manyfold, oft, oftentimes, repeatedly, usually, offtimes
反义：infrequently, occasionally, seldom, sometimes