Recently, I've been experiencing symptoms of diplopia, and I'm worried.

He is viewing that situation as a serious problem.

He views that situation as a problem.

Please stop belittling his opinion.

Hakushi is my best friend.

Keishi is my best friend.

Satoshi is my best friend.

He was born as an illegitimate child and experienced many difficulties.

My grandfather used to till his privately-owned rice field.

Using the private railway makes commuting very convenient.