2月21日則是他們的最后期限。

　　And February 21 is the deadline for the report.

　　俄勒岡州于1887年2月21日首先通過(guò)。

　　Oregon was the first to pass it on February 21, 1887.

　　1994年2月21日行星際激波引起的磁暴

　　The magnetic storm resulted from the interplanetary shock of February 21, 1994

　　上交的最后期限是2月21日。

　　The final deadline forsubmissions is february21st.

　　His exhibition opens on 5 February

　　他的展覽于2月5日開幕。

　　He welched on his agreement with the club that he would play for them in February.

　　他本答應(yīng)二月份替俱樂(lè)部打球，但他食言了。