He never forgot the lesson of 'under the plum tree, in the melon field', always being careful with his actions.

The African wild dog, also known as the Lycaon, is a very rare species.

His explanation was impossible to understand.

Physics and chemistry classes are very difficult.

The culture of Latin America is very rich and attractive.

He handled the issue with delicacy.

When her son goes to school, the mother always says 'see you later'.

Have a good day at school, son.

My university is in Tokyo.

My high school has very strict rules.