My grandfather taught me the technique of catching gobies.

He used the technique of goby catching in the river.

This problem requires simple differentiation.

He is good at differentiating truth from falsehood.

We had a picnic by the lakeside.

My baby has a Mongolian spot.

His new book is a big success, and it's already been reprinted.

That book is very popular and has already been reprinted five times.

His heart seemed to be torn in half.

The 'hanwari' is another name for the 'ōsanshōuo', and its distinctive shape and color are beautiful.