cosmologist

例句：

1. 1. He is a renowned cosmologistwho has made significant contributions to the fieldof astrophysics.
   他是一位著名的宇宙学家，对天体物理学领域做出了重大贡献。
2. 2. The cosmologist believesthat the universe is expanding and that lifemay exist elsewhere in the cosmos.
   这位宇宙学家认为宇宙正在扩张，并且可能在其他星球上存在生命。
3. 3. Inhis latest research, the cosmologistdiscovered a new type of exoplanet with an unusually high density.
   在他的最新研究中，宇宙学家发现了一种具有异常高密度的新类型的系外行星。