狼群在雪地里追踪一只鹿。

The ___wolf-pack tracked a deer through the snow.

海军指挥官下令潜艇以狼群战术协同作战。

The naval commander ordered the submarines to operate in a ___wolf-pack for coordinated attacks.

那群投资人像狼群一样围攻这家初创公司，试图低价收购。

The investors acted like a ___wolf-pack, aggressively trying to acquire the startup at a low price.