Directivity
[计] 指向性, 方向性
🗣️ 情景例句
You and Mommy used to take me on the ferryboat.
你和妈妈常带我坐渡船。
It's impossible. You may notice that the cost of raw materials has gone up in recent years.
不可能，您可能注意到了近年来原材料的价格上涨了。
What happened on the march then?
那么 ，在游行中发生了什么事？