Applications must be in by April 30.

申请务必于四月三十日之前寄到。

《牛津词典》

UNESCO recently set April 30 as a day to raise awareness of jazz music, its significance, and its potential as a unifying voice across cultures.

联合国教科文组织最近将4月30日定为世界爵士乐日，旨在提高人们对爵士乐的认识、爵士乐的重要性以及爵士乐作为跨文化中统一的声音的潜力。

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People can submit pictures of several children at a time before April 30 next

在明年的8月30日前，大家可以一次寄几个孩子的照片给组委会，但每个孩子的照

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On April 30 it announced a 9.3 fold increase in profits for last year.

FORBES: Whither Japan Stocks: Investors Saying 'Show Me Growth'; Sharp On Life Support

On April 30, we filed it with the Student Grievance and Grade Appeals Board.

WSJ: Best of the Web Today: See You in the Funny Papers

Canada had one-fourth of the 16 teams in the playoffs when they began April 30.

WSJ: 4 of NHL's Original 6 among 8 still in playoffs