建设-运营-转让(BOT)

建设-运营-转让(BOT)工程建设模式，是为大型项目融资的一种方式。中国将在津建设大型基础设施。中方将负责“建设”阶段，之后在双方认可的“运营”期收回投资，“运营”期结束后，项目会“转让”给津政府。这是互利互惠的协议，津将得到电厂、高速公路、铁路、机场、水供应设施等，而中国也将受益于投资并收回成本。

山手Yamanote

山手線 日本東京電車環狀線

中国留学生

在海外高科技产业密集的地区，中国留学生男女比例极不平衡。 实际上，由于美国东岸的很多学校以商科、艺术、文科为主，所以女留学生数量会相应较多。 到美国读硕士、博士的男留学生多数都是理工科，一般都是性格内向，很少愿意主动出击。 相比于外国男生的外放加幽默风趣，很多时候，女孩子的焦点就会被吸引走。

清詞三大家

納蘭性德是清初著名大詞人，與朱彝尊、陳維崧並稱 "清詞三大家"。

枣树

一些不同枣树品种的接穗， 嫁接在后院几棵十几年以上的枣树上， 发现有下面几个好处， 一是不同品种成熟有早晚。 二是不同品种的枣花异花授粉，枣结的多。 还有就是接穗嫁接在大枣树上， 由于营养水分充足，它们结的枣个头大，成色好。

Veritas

Veritas, meaning truth, was the goddess of truth, a daughter of Saturn and the mother of Virtue. It was believed that she hid in the bottom of a holy well because she was so elusive. Her image is shown as a young virgin dressed in white.

幾何三大問題,Diophantus

------ ----- --------------------------- 所謂幾何三大問題無非是，給定一個單位長度； （方圓問題） 求作一個長度為 $\sqrt{\pi}$ 的線段。 （倍立方問題） 求作一個長度為 $\sqrt[3]{2}$ 的線段。 （三等分角問題） 先給長度為 α 的線段，求作一個長度為 x 的線段，而 x 滿足 $4x^3-3x-\alpha=0$。 ------------------- Diophantus's riddle is a poem that encodes a mathematical problem. In verse, it read as follows: 'Here lies Diophantus,' the wonder behold. Through art algebraic, the stone tells how old: 'God gave him his boyhood 1/6 of his life, 1/12 more as youth while whiskers grew rife; And then yet 1/7 ere marriage begun; In 5 years there came a bouncing new son. Alas, the dear child of master and sage After attaining 1/2 the measure of his father's life chill fate took him. After consoling his fate by the science of numbers for 4 years, he ended his life.' Stated in prose, the poem says that Diophantus's youth lasts 1/6 of his life. He grew a beard after 1/12 more of his life. After 1/7 more of his life, Diophantus married. 5 years later, he had a son. The son lived exactly half as long as his father, and Diophantus died just 4 years after his son's death. All of this totals the years Diophantus lived. Let D=84 be the number of years Diophantus lived, and let S=42 be the number of years his son lived. Then the above word problem gives the 2 equations