With his bull-like strength, he lifted the heavy box effortlessly.

bull-like 是由名词 bull（公牛）加上后缀 -like（像...的）构成的形容词。bull 象征力量和强壮，-like 表示"具有...特征的"。 bull-like 形容像公牛一样强壮有力的特质。