Buying him expensive wine is just like 'pearls before swine'.

He was taken to the hospital because of pulmonary edema.

Shu never missed a day of training, striving to maintain his self-discipline.

We have a responsibility to protect this nature.

There are many large oak trees in this park.

Her necklace had a beautiful pearl on it.

A tumor was found in his brain.

What is the purport of this sentence?

He was greatly enjoying the old wine.

He instructed me in piano.