他今年七岁。
With only 1, 600 giant pandas in the world, the pressure will be on Tai Shan to become a dad. But that won't happen until he is six or seven years old.
在全世界仅有1600只大熊猫，这样的压力迫使泰山不得不做爸爸，但是需要等到它六岁或七岁的时候。
Tom is a little boy, and he is only seven years old.
汤姆是个小孩，他才7岁。
Tom is seven years old, and he (is able to) dress himself.
汤姆已经七岁了，他能够自己穿衣服。
My brother and I preprimary school students. He is in Grade One, and he's seven years old, .
我和弟弟在上小学，他在一年级级，七岁。
My brother and I preprimary school students. He is in Grade One, and he's seven years old, .
我和弟弟在上小学，他在一年级级，七岁。
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