Directrix
n. 準(zhǔn)線\\n[計(jì)] 準(zhǔn)線
? 同義詞
??? 情景例句
Without that, it's hard.
沒(méi)有就難辦了。
Take care and give my by best to your parents.
多保重，代我向你的父母問(wèn)候。
That is not in the agreement.
借約上可沒(méi)有這一條。