在望尔生物技术展览馆，一名参观者展现出对这个公司产品的浓厚兴趣。

At Wanger Biotech's pavilion, a visitor is showing a keen interest in the company's products.

youdao

在望尔生物技术展览馆，一名参观者展现出对这个公司产品的浓厚兴趣。

At Wanger Biotech's pavilion, a visitor is showing a keen interest in the company's products.

youdao