Her earliest memory is of singing at the age of four to wounded soldiers.

她最早的记忆是在4岁时为受伤的士兵唱歌。

《柯林斯英汉双解大词典》

Males in four species started singing significantly earlier in the morning if they lived near streetlights than did their deep forest-dwelling kin.

当它们“活在灯下”，而非像其他亲戚一样“深居林中”时，有四种雄鸟清晨唱歌的时间显著提前了。

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Her father Aristotle, who is a care assistant, revealed that his daughter began singing when she was aged four and used to practise for hours in front of the mirror.

Arisxandra的父亲是一名健康护理员，他说Arisxandra从四岁起就喜欢唱歌，会一个人对着镜子练习好几个小时。

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There are four main parts of hip-hop: MCing is singing words or what is called rapping.

VOA: special.2009.10.14

Blackberry's four cheeses--Singing Brook, Violet, Trefoil and Blackberry Blue--are made by cheesemaker Kristian Holbrook and his assistants, who the day I visited included a fresh-faced young woman named Heidi, lacking only a dirndl and a yen to yodel to pass for a Swiss milkmaid.

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Thanks to the shift from airy falsetto to harmonizing, and the slow but propulsive beat, he sounded as if he were singing from about four feet above the ground.

NEWYORKER: Boyz II Man

Ms. FEIST: (Singing) One, two, three, four tell me that you love me more.

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