二三

He hopes that the oceans will be free of plastic in about twenty or thirty years.

他希望海洋在二三十年后将不再有塑料。

They lie again and again!

他们一而再再二三的撒谎。

While there´s never a good age to get cancer, people in their 20s and 30s can feel particularly isolated.

虽然不存在一个患上癌症的合适年纪，但二三十岁的人可能尤其容易感到被孤立。

We´ve been discussing films in the 1920s and 30s, and how back then film categories, as we know them today, had not yet been established.

我们一直在讨论20世纪二三十年代的电影，以及当时还未形成的、而如今已被我们熟知的电影类别。

Writing in the last year of his life, he expressed the opinion that in two or three respects his mind had changed during the preceding twenty or thirty years.

他在生命的最后一年，在所写文章中表达了自己这样的想法，他认为在过去的二三十年里，思想在两三个方面发生了变化。