Directrix
n. 准线\\n[计] 准线
✅ 同义词
🗣️ 情景例句
You are a walking dictionary.
你是活字典。
Education begins a gentleman, conversation completes him.
人的教养始于教育，成于社交。
He doesn't like writing letters, but he likes receiving them.
他不爱写信，但他却喜欢收到信。