Don't forget to bring insect repellent before going camping.

His presence dominated the entire room.

This equation has a singularity.

He is an expert in entomology, especially knowledgeable about butterflies.

Insects are an important part of the natural world.

He is world-famous as an entomologist.

Transitive verbs require an object that is directly moved by the subject.

He always acts as if it's someone else's concern.

He passionately discussed the problem of other minds in his philosophy class.

He made a decision taking into account various other circumstances.