The weather is too stuffy.

This requires putting words into specific contexts.

There are two solutions to suffocation. One solution is to feel uncomfortable and depressed. One solution is to ... seal it and let it die. The former reads the fourth sound and the latter reads the first sound.

Boring means more ... First, it refers to the uncomfortable feeling caused by the bad weather and airflow. Dark clouds are gathering, and there is no wind. How stuffy! Read the first sound. Pointing at people is dull and silent. Read the first sound, too. First, it means that you are in a bad mood. Read the fourth sound.