例句與造句

1. In usual vector notation a horizontal wind blowing from 270 degrees would be represented by a vector with its origin at the intersection of the two horizontal axes .
   在通常的向量符號中，水平風(fēng)從270吹來時(shí)，應(yīng)當(dāng)表示為零點(diǎn)在兩個(gè)水平軸的交點(diǎn)。
2. It's difficult to find vector notation in a sentence. 用vector notation造句挺難的