吃透英语课本，提升在校竞争力
num. 第七十
n. 第七十；七十分之一
adj. 第七十的；七十分之一的
a democracy that produced Socrates and allowed him to philosophize freely until his seventieth year.
毕竟是民主哺育了苏格拉底,并允许他自由地进行哲思,直到他七十岁为止。
Tyler was past his seventieth birthday when his 15th child was born.
泰勒总统七十岁生日时，他第十五个孩子降生了。
He even produced the White House concert in celebration of jazz musician Duke Ellington's seventieth birthday in nineteen sixty-nine.
1969年，他甚至在白宫主办了一次音乐会，纪念爵士音乐家杜克.埃林顿七十岁诞辰。
She celebrated her seventieth birthday with friends and family.
她和朋友家人一起庆祝了她的七十岁生日。
