“三岁”的拼音为：sān suì...

史密斯比我大三岁.Smith is senior to me by three years.她比我小三岁.She is my junior by three years.她儿子三岁了.Her son is three years old....

当他十三岁时, 他那出众的相貌已经显露出来.When he was thirteen, his extraordinary good looks were already apparent.你的姊妹几岁? 她十三岁.How old is your sister? She is thirteen years old.我才十三岁, 皮肤黧黑,头发凌乱, 有点儿孤芳自赏, 也不免形单影只.I was 13, sunburned, shaggy...

“三岁”的英语可以翻译为：three years old ...