This immense chasm has been formed by an underground stream which has tunneled a course through a flaw in the rocks.
這個深邃的洞穴是由一條地下暗泉沖刷巖石中的縫隙并使之慢慢變大而形成的。
新概念英語第三冊
Lesson 42 Modern cavemen
?? 句中詞匯解析
從本句中提取的重要詞匯
adj. 極大的，巨大的;浩瀚的，無邊際的;〈口〉非常好的;弘道;
?? im不+mense計量，測量→不能測量→無限的
"There is still an immense amount of work to be done."
還有非常非常多的工作沒有做。
近義：huge, incommensurate, infinite, large, mammoth, massive
adj. 地下的;秘密的;先鋒派的;隱蔽的;
?? under在…下+ground地→地下的
"a secret underground passage"
地下秘密通道
近義：subsurface, subterranean, subterraneous, buried, backdoor, secret
反義：jural, lawful, legit, legitimate, licit, original
n. 課程;航線;行動方向;一道菜;
vt. 快速地流動;奔流;跑過;追逐;
vi. 沿…（方向）前進;指引航線;快跑;迅速移動;
?? cour 發生+se → n. 發展；進程，課程，一道菜
"There were only three of us on the advanced course."
只有我們三人學高級課程。
近義：racecourse, racetrack, speedway, track, pass, range
n. 峽谷;裂縫，斷層;裂口;（感情等的）分歧;
"There's a chasm between rich and poor in that society."
那社會中存在著貧富差距.
近義：pit, abyss, gulf, pitfall, snare, trap
反義：head, height, apex, hilltop, peak, pinnacle
n. 河流，小河，川，溪;潮流，趨勢，傾向;（事件等的）連續，（財富等的）滾滾而來;流出，流注，一連串;
vt.& vi. 流，流動;
vi. 飄揚;招展;魚貫而行;一個接一個地移動;
vt. 按能力分班（或分組）;按能力分班（或分組）;
"The puddles had coalesced into a small stream."
地面上水洼子里的水匯流成了一條小溪。
近義：inflow, issue, run, spring, well, debouch