Then it was tacked up on the wall at the U.S. Patent Office for about 40 years, where it was subjected to a strong northern light.

之后大概有40年，它被钉在美国专利局的墙上，遭受北边强烈的阳光照射。

youdao

Then it was tacked up on the wall at the U.S. Patent Office for about 40 years, where it was subjected to a strong northern light.

之后大概有40年，它被钉在美国专利局的墙上，遭受北边强烈的阳光照射。

youdao