deep·en /ˈdiːpən/ vt. | vi. ❶ vt. 1. 使变深;挖深 deepen a harbour 挖深海港 2. 加深;使强烈;使变浓 deepen one's interest in mathematics 加深对数学的兴趣 deepen a colour 使颜色加浓 3. 使低沉 ❷ vi. 1. 变深;深化 The lines on her forehead had deepened. 她额上的皱纹更深了。 2. 变强烈;变浓 His sense of guilt deepened. 他的内疚感变得更加强烈了。 Dusk was deepening. 暮色渐浓。 3. 变低沉 His voice deepened. 他的声音变得低沉了。