Directivity
[计] 指向性, 方向性
🗣️ 情景例句
No, no, Robbie doesn't have them.
不， 不， Robbie没有拿。
He who handles a nettle tenderly is soonest stung.
与恶人交往而讲仁义，必受其害。
many of them serious and senior scientists---- who dream of sending people to it.
其中的不少人是认真和资深的科学家，他们一直梦想着把人送上火星。