This character needs a semi-voiced mark.

His opinion is completely opposite to my position.

We deeply reconsider this failure and strive not to make the same mistake again.

I deeply regret my past actions.

Have you seen my handkerchief?

What is the half-life of this substance?

The earth is divided into the northern hemisphere and the southern hemisphere.

We plan to sell our new product nationwide.

They were subjected to the enemy's counterattack.

They started a counteroffensive against the enemy's attack.