Umbral
a. 有荫影的, 阴暗的, 本影的
🗣️ 情景例句
He's on the phone.
他在电话上。
Compared to the previous model, our new model is less expensive and easier to use.
与旧型机比较我们的新型价格便宜且更容易操作。
Two main techniques have been used for training elephants,
驯象有两种主要的方法，