The United States joined the war in April 1917.

美国于1917年4月参战。

《柯林斯英汉双解大词典》

As the war drew to a close, Roosevelt's health deteriorated, and on April 12, 1945, while at Warm Springs, Georgia, he died of a cerebral hemorrhage.

随着战争接近尾声，罗斯福的健康状况也每况愈下。1945年4月12日，在在佐治亚州沃姆斯·普林斯，罗斯福因脑出血与世长辞。

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Since April regular guided Tours have taken curious visitors into the vast World war II structure to see the turret interiors and the effect of two failed attempts to blow it up after the war.

从四月份开始，导游团经常将好奇的游客带往这个巨大的二战建筑物，参观炮楼的内部结构和战后两次想要炸毁它却没有成功的尝试给炮楼带来的影响。

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Years of disagreement between the North and the South finally burst into civil war in April of eighteen sixty-one.

VOA: special.2009.08.20

As soon as the Civil War broke out and Lincoln called for volunteers in late April 1861, Uriah Parmelee dropped out of his Junior year at Yale and he joined the first regiment he could get into.

内战爆发时,林肯在1861年四月末召集志愿兵,大三的乌利亚从耶鲁辍学,好不容易入了伍

耶鲁公开课 - 美国内战与重建课程节选

Just before sunrise on April twelfth, eighteen sixty-one, the first shot was fired in the American Civil War.

VOA: special.2009.08.13

Tensions over oil and security brought the two sides to the brink of war last April.

BBC: Sudanese leaders Bashir and Kiir commit to buffer zone

Soon after the split, tensions between the old foes escalated over outstanding issues, coming close to an all-out war in April.

CNN: STORY HIGHLIGHTS

Since South Sudan's independence, tension between the new neighbours has been strained, with rebellions breaking out on either side of the border and a dispute over oil which escalated to the brink of war last April.

BBC: Humanitarian crisis in Sudan south gets worse, says UN