Bellatrix
n. 參宿五（位于獵戶座）
??? 情景例句
A little knowledge is dangerous.
一知半解最危險。
How long is the ticket valid?
這車票有效期多久？
As is so often pointed out, knowledge is a two-edged weapon which can be used equally for good or evil.
正像人們常常指出的，知識是一把雙刃刀，可以用于造福，也可以用來為害。