Estradiol is a type of female hormone, mainly produced in the ovaries.

He discreetly swapped my wallet.

Liquid nitrogen is very cold, so care must be taken when handling it.

He is good at playing the contrabass.

He drew the ace of spades.

The reporter is investigating the details of the incident.

This French onion soup is very delicious.

The new school building is very spacious, and the facilities are also the latest.

He accidentally broke the glass.

Scotland is a country with attractive beautiful nature.