By the age of nine, the monkey had learned to solo on the vehicle. r.

到九岁的时候，这只猴子已经学会了单独表演驾驶拖拉机了。

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The monkey's most extraordinary accomplishment was learning to operate a tractor. By the age of nine, the monkey had learned to solo on the vehicle.

这只猴子最了不起的成就是学会驾驶拖拉机。 到九岁的时候，这只猴子已经学会了单独表演驾驶拖拉机了。

youdao

The monkey "s most extraordinary accomplishment was learning to operate a tractor. By the age of nine, the monkey had learned to solo on the vehicle."

这只猴子最了不起的成就是学会驾驶拖拉机。到九岁的时候，这只猴子已经学会了单独表演驾驶拖拉机了。

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