Directivity signal
[電] 擇向訊號(hào)
?? 詞語(yǔ)組成解析
[計(jì)] 指向性, 方向性
signal
['s?gnl]
n. 信號(hào)，暗號(hào);預(yù)兆，征象;動(dòng)機(jī);導(dǎo)火線;
vt. 向…發(fā)信號(hào);用動(dòng)作（手勢(shì)）示意;以信號(hào)告知;
vi. 發(fā)信號(hào);
adj. 顯著的，優(yōu)越的;暗號(hào)的，作信號(hào)用的;
sign記號(hào)，信號(hào)+al表名詞 → 信號(hào)
??? 情景例句
Maybe she'll call back. She promised.
也許她會(huì)打電話回來(lái)。她說(shuō)了。
Please come a litter earlier.
請(qǐng)?jiān)缫恍﹣?lái)。
Not realizing who she was, the assistant was eager to serve her this time.
那個(gè)售貨員沒有認(rèn)出她是誰(shuí)，這一回接待她的態(tài)度非常殷勤。