3岁英文:three years old year
3岁英文缩写:3rd
old
adj. 陈旧的,古老的年老的
n. 古时
例句:
Jenny is seventeen years old. 
珍妮17岁。
They were old army comrades. 
他们是部队的老战友。 扩展资料
She loved the big old house.
她喜爱那座古老的'大房子。
The old man spoke deferentially.
那位老人谦恭地说着话。
She was a mean old harridan.
她是个刻薄的老泼妇。