北美森林里经常能听到灰狼的嚎叫声。

The howl of a ___timberwolf is often heard in North American forests.

这支篮球队选择灰狼作为队名，象征他们的野性和团队精神。

This basketball team chose the ___Timberwolves as their mascot to represent their wildness and teamwork.