ket
n. 刃；尿酮体；右矢
n. （Ket）人名；（泰）革；（越）结
例句
bra-ket) for quantum mechanics.
这叫做量子力学的 Dirac 标记法（也可以称做 bra-ket）。
He actually expected me to pay for his tic ket.
他竟然指望我给他付票钱。
He queued up to by his subway tic ket of20 penny.
他排队买了一张20便士的地铁车票。
