正Ж夹

【医】 cheek clamp

1. 他的帽子没戴正。
   His hat isn't on straight.
2. 他对著镜子看领带是否系正。
   He looked in the glass to check that his tie was straight.
3. 他似乎把正号误作负号了。
   He seems to have mistaken a plus for a minus.
4. 正数的数目是无穷的。
   The number of positive numbers is infinite.
5. 这个电荷是正电荷。
   This charge is a positive charge.
6. 请等等！我帮你正正领带。
   Just a minute! Let me put your tie straight.
7. 我们是朝正北方向航行。
   Our course was straight to the north.
8. 我的领带系得正不正？
   Is my tie straight?

夹的英语翻译：