三十日的英文：
thirtieth

The U.S. government fiscal year legally ends on September 30.
美国政府会计年度法定为九月三十日结束。

The pope had canonized her on April 30, 2000
教宗在二○○○年四月三十日册封她为圣人。

It is unimaginable that a new team of administrators should suddenly take over on the morning of July 1, 1997.
不能设想，到了一九九七年六月三十日，一夜之间换一套人马。

For ordinary sick leave not exceeding thirty (30) days in one year, the Employee shall be entitled to half pay.
雇员一年内之病假未超过三十日部分，工资折半发给。

The 30th was my well day of course, and I went abroad with my gun, but did not care to travel too far
三十日当然身体更好了,我重又带枪外出,但不敢走得太远。

Referring to your advertisement in the Times of June 30 for an assistant chemist, I hope to offer my services.
贵公司六月三十日在《时报》上刊广告征求助理药剂师。本人特此应征。

One second of arc movement is one thirtieth of a millimetre.
一弧秒的移动是一毫米的三十分之一。

John scored a goal in the thirtieth minute of the match.
约翰在比赛的第30分钟踢进一球。

This Protocol shall enter into force on the thirtieth day following the day of its acceptance
2．本议定书应在接受之日后第30天生效。

Speech at the thirtieth Session of the Central People's Government Council.
这是毛泽东同志在中央人民政府委员会第三十次会议上的讲话。

For each other government it shall enter into force on the thirtieth day following the date of its acceptance or accession to this Agreement
对于每一其他政府，本协定应于该政府接受或加入本协定之日后第30天生效。