“fill the role of”簡單造句，fill the role of造句子

This stronger gravity can fill the role of dark matter, holding together galaxies and clusters that would otherwise fly apart.

They need to fill the role of intellectual midwife: engage them in a conversation where the rules, the laws, what 's right and what ' s wrong are talked about and not imposed.

When Bernard suggested that he might fill the role of a secretary, Edouard agreed.

The team needs someone to fill the role of manager very soon.