到十岁时，他已学了约1000个英语单词。的翻译：At the age of ten, he had learned about 1000 English words. 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

To ten years old, he has learned about 1000 English words.

At the age of ten, he had learned about 1000 English words.

When to ten years old, he has studied approximately 1000 English words.

Up to the age of 10, he has already learned about 1000 English words.

At the age of ten, he had learned about 1000 English words.