To extend farther downward or backward. 使深；使深远。 We'll have to deepen the well of we want more water. 假如我们想要更多的水，我们必须把井挖深。 To make more profound. 使更深奥。 To extend farther down. 加深。 The color of water deepens with its depth. 水的颜色随深度而变暗。 To become more difficult. 变得更难。 |