I finished the 8th, the 9th and the 10th rows.

VOA: special.2009.02.07

Recorded September 9th, 1947, Grace Murray Hopper in case you're interested. This was the lab book of Grace Murray Hopper.

想知道的话大概是在1947年9月9号，记载于,的实验手册中。

麻省理工公开课 - 计算机科学及编程导论课程节选

In November of 1840, the American people elected their 9th president, William Henry Harrison.

VOA: special.2009.01.29