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1·I arrived at the end of April.

我是四月底到达的。《牛津词典》

2·We went to Japan last April.

去年四月我们去了日本。《牛津词典》

3·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》

4·She was born in April.

她是四月出生的。《牛津词典》

5·70 jobs have been reprieved until next April.

有70个职位暂时保留到明年四月份。《牛津词典》

6·The new software is planned for release in April.

新软件计划四月份发行。《牛津词典》

7·It's extremely rare for it to be this hot in April.

四月份就这样炎热是极其罕见的。《牛津词典》

8·In March and April, the weather is much less predictable.

三、四月份的天气非常不好预测。《牛津词典》

9·It was the first week in April.

那是四月的第一个星期。

10·My niece was born in April, 1994.

我的侄女在一九九四年四月份出生。

4月

1·She was born in Milan on April 29, 1923.

她1923年4月29日生于米兰。《柯林斯英汉双解大词典》

2·It happened on the weekend of 24 and 25 April.

事情发生在4月24日和25日那个周末。《牛津词典》

3·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》

4·The present assembly will be dissolved on April 30th.

本届议会将于4月30日解散。《柯林斯英汉双解大词典》

5·The normal cyclone season extends from December to April.

正常的飓风季节从12月持续到4月。《柯林斯英汉双解大词典》

四月

1·The meeting is on April fifth.

会议日期是四月五日。《牛津词典》

2·We went to Japan last April.

去年四月我们去了日本。《牛津词典》

3·We were wondering about next April for the wedding.

我们寻思着下个四月举行婚礼可好。《牛津词典》

4·The sunshine is beautiful on April fourth.

四月四日，阳光明媚！

5·His birthday is on the first day of April.

他的生日在四月的第一天。

四月份

1·70 jobs have been reprieved until next April.

有70个职位暂时保留到明年四月份。《牛津词典》

2·The new software is planned for release in April.

新软件计划四月份发行。《牛津词典》

3·It's extremely rare for it to be this hot in April.

四月份就这样炎热是极其罕见的。《牛津词典》

4·In March and April, the weather is much less predictable.

三、四月份的天气非常不好预测。《牛津词典》

5·My niece was born in April, 1994.

我的侄女在一九九四年四月份出生。

(1)April fool's day愚人节（4月1日）

(1)April fool愚人节；愚人节中受愚弄者

(1)April fools' day愚人节