骶管

sacral canal的用法和样例：

例句

At the caudal end of the sacrum the roof of the vertebral canal is commonly deficient.在骶管末端，椎管往往缺损。

VOA慢速英语2012 EXPLORATIONS - The Erie Canal Helped America Grow

EXPLORATIONS - The Erie Canal Helped America Grow BOB DOUGHTY: Im Bob Doughty. MARIO RITTER: And Im Mario Ritter with EXPLORATIONS in VOA Special English. In the early eighteen hundreds, traveling in the United States was dangerous. Business and trad

发表于:2018-12-07 / 阅读(48) / 评论(0)

2012年VOA慢速英语(五)月

EXPLORATIONS - Erie Canal

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发表于:2018-12-15 / 阅读(66) / 评论(0)

Explorations

Security is Major Concern Along Panama Canal

Broadcast: Jan 29 2003 Since the terrorist attacks of September 11, 2001, authorities in Panama have stepped up security at their nation's 1) transoceanic canal and they are now working closely with i

发表于:2019-01-03 / 阅读(74) / 评论(0)

VOA2003（上）-商业论坛

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2011年VOA慢速英语(八)月

2007年VOA标准英语-Some Indians Say Proposed Canal Will Destroy Sa

By Anjana Pasricha New Delhi 22 September 2007 A political storm is raging over a project to build a shipping canal in southern India. As Anjana Pasricha reports from New Delhi, Hindu activists say the canal will destroy a bridge they believe was bui

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2007年VOA标准英语（九月）

China intensifies efforts to protect ancient canal

BEIJING, June 9 (Xinhua) -- China is moving to better protect its 2,500-year-old Grand Canal by encouraging public donations and banning unnecessary construction in the area. The Ministry of Culture publicized a set of regulations to protect the Gran

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centralized pressure oil system

chumbawamba