He was hiding the fact that he was an illegitimate child.

This 'enkanabachi' is a very rare type of bee.

Please teach me how to calculate the excircle of this triangle.

I bought a new notebook at the 100-yen shop.

I am deeply interested in the teachings of the Japanese Tiantai.

My dog recently contracted strongylosis.

I found some useful kitchen items at the 100-yen shop.

He is doing special exercises to strengthen his teres minor muscle.

I don't know if he will lend me a thousand yen.

He is an expert in computational linguistics and is involved in the development of artificial intelligence.