He plays the role of a canary in a coal mine in our team.

Monotremata is a part of mammals, and it has different characteristics from other animals such as birds and reptiles.

I plan to spend this year's Christmas with my family.

It suddenly started raining.

Tachysurus nudiceps, known as 'Gigi' in Japanese, is a species of freshwater fish in Japan and is reputed to be delicious.

He needed my assistance to make the project successful.

He is responsible for assisting the new students.

He got seasick from the long boat trip.

He is known as a person of unimpeachable conduct.

My father practices Falun Gong in the park every day.