儒琴今日英语单词选自日常用语，欧美报刊文章, 以及英语原文小说。每天坚持学习今日英语单词，有助于阅读和理解当今欧美主流媒体的新闻时事报道和英语文学作品；增强日常英语交流能力。
儒琴今日英语单词 Word of the Day
glaciation
noun [ U ] /ˌɡleɪ.siˈeɪ.ʃən/
the forming, existence, or movement of glaciers over the surface of the earth
冰河作用（地球表面的冰河形成、存在和移动）
This landscape shows many clear features of glaciation. 这里的景观有很多明显的冰河作用的特征。(Cambridge)
Glaciation during the past 2.4 million years has had a profound effect on landscape of the United States. Continental glaciation in the central US reorganized river systems, flattened topography, and buried topography producing areas of erosion, old drift, and young drift.
hieroglyphics / hieroglyph
noun [ plural ] [haɪə.roʊˌɡlɪf/
/ˌhaɪə.roʊˈɡlɪf.ɪks/
1) a system of writing that uses pictures instead of words, especially as used in ancient Egypt
象形文字（尤指古埃及的文字）
2) a picture or symbol that represents a word, used in some writing systems, such as the one used in ancient Egypt
（用于古埃及文字等的）象形符号，象形字 (Cambridge)
Egyptian hieroglyphs were the formal writing system used in Ancient Egypt. Hieroglyphs combined logographic, syllabic and alphabetic elements, with a total of some 1,000 distinct characters. Cursive hieroglyphs were used for religious literature on papyrus and wood.
stratum
noun [ C ] /ˈstræt̬.əm/ plural strata /ˈstrɑː.tə/ /ˈstræ.t̬ə/
1) one of the parts or layers into which something is separated
部分；层；阶层
The report shows that drugs have penetrated every stratum of American society. 报告显示，毒品已经渗入美国社会的各个阶层。
geology specialized
2) a layer of rock, soil, or similar material
层；岩层；地层
The cliffs are characterized by remarkable zigzagging strata of shale and sandstone. 这些悬崖的特征是它们由一层层清晰易辨的页岩、石灰岩和砂岩交错构成。(Cambridge)
I have been working on Cambrian–Ordovician boundary strata in the Rocky Mountain region for ~15 years, primarily with John Taylor (Indiana U. of Pennsylvania), Robert Ripperdan (St. Louis U.), Jim Miller (SW Missouri State), Ray Ethington (U. of Missouri), and Jim Loch (U. of Central Missouri) and numerous Colorado College …
crenellated
adjective /ˈkren.əl.eɪ.t̬ɪd/
having battlements (= castle walls with regular spaces along the top)
有城垛的，有雉堞的
The mountains of Banff include other types: complex, irregular, anticline, syncline, crenellated, lace, and sawback. Banff National Park extends eastward from the Rocky peaks and include the eastern slopes of the main ring and a large part of the Front Range. This includes the mountains around the town of Banff.
