In order to keep the secret, he said, 'One word too many will be the end of me,' and didn't say anything.

The water vole is a small mammal native to Europe.

The European water vole is a small mammal native to Europe.

Due to his somnambulism, he may walk around unconsciously in the middle of the night.

My mother does tough scrubbing and washing every day.

He is an expert in folklore studies, and his research is highly regarded worldwide.

My younger sister got chickenpox last week.

He tried to manipulate people using hypnotism.

I go to swimming lessons every Friday.

Everyone is attracted to her allure.