Threonine is one of the essential amino acids.

Threonine is one of the essential amino acids necessary for the human body.

She tidied up her hair, which was like tangled thread.

His mind was in confusion like a tangled thread.

I am attending cooking classes to learn the technique of filleting fish.

This weight is very heavy.

That rumor is groundless.

You must submit the report by the end of the month.

That information was the first time I heard of it.

He visits his family's graveyard every Sunday.