元七 yuán qī 阴历正月初七日。即人日。宋·叶廷珪《海录碎事·人日》：“《东平王苍安仁峯铭》：‘正月元七，厥日惟人。’”
自西元七世纪 ODO
第七单元 Unit Seven ; Descriptive Speeches ; Unit Seven Letters of Consolation ; Unit Seven Advertisement
第七元素 The Seventh Element ; The Senventh Element
单元七 UNIT SEVEN WELDING
七元醇 heptabasic alcohol
第十七单元 Conference Interpreting ; Shopping
单元十七 UNIT SEVENTEEN SHIPYARD ; Lessons
七元老 TheFirstSeven
七美元 seven dollars
她以每股五元七角的价钱购入三万股电盈，但她说预期今年内都难以回本。
She bought 30，000 PCCW shares at $5.70， but said she did not expect them to return to that level for years.
德拉反复数了三次，还是一元八角七，而第二天就是圣诞节了。
One dollar and eighty-seven cents. And the next day would be Christmas.
在1943年，《国家战事营养指导》中出现“基础七元素”观念，主要由usda和新成立的战时食品局提出。
In 1943, the "Basic Seven" image appeared in a National Wartime Nutrition Guide produced jointly by the USDA and newly-created War Foods Administration.
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