坚果和鱼类都是蛋白质的优质来源。

Nuts and fish are both excellent sources of ___protein.

味噌汤含有富含蛋白质的食材，有助于维持健康。

Miso soup contains ingredients rich in ___protein, which helps maintain good health.

充足的蛋白质摄入对肌肉生长和修复至关重要。

Adequate ___protein intake is crucial for muscle growth and repair.