英語翻譯：

correctitude; just; positive; principal
【計】 POS
【化】 nor-; ortho-
【醫(yī)】 iusto; nor-; o-; ortho-

相關詞條：

1.main  2.principle  3.straight  4.upright  5.correctitude  6.plus(sign)  7.positive  8.justo  

例句：

1. 他的帽子沒戴正。
   His hat isn't on straight.
2. 他對著鏡子看領帶是否系正。
   He looked in the glass to check that his tie was straight.
3. 他似乎把正號誤作負號了。
   He seems to have mistaken a plus for a minus.
4. 正數(shù)的數(shù)目是無窮的。
   The number of positive numbers is infinite.
5. 這個電荷是正電荷。
   This charge is a positive charge.
6. 請等等！我?guī)湍?em>正正領帶。
   Just a minute! Let me put your tie straight.
7. 我們是朝正北方向航行。
   Our course was straight to the north.
8. 我的領帶系得正不正？
   Is my tie straight?