Bell valve
[機] 裝料鐘
?? 詞語組成解析
bell
[bel]
n. 鐘，鈴;鐘聲，鈴聲;鐘狀物;[建]圓屋頂;
vt. 敲鐘;系鈴于，給…裝上鈴;使成鈴狀;把…放在鐘形罩內;
vi. 使象鐘狀地張開;鳴鐘;
valve
[v?lv]
n. 閥;真空管;（管樂器的）活栓;（心臟的）瓣膜;
vt. 裝閥于;以活門調節;
??? 情景例句
And if you don't?
要是你找不到呢？
Pleasure has a sting in its tail.
樂中必有苦。
It wasn't easy to win the match. No. 64 Middle School is really a strong team.
贏這場球不容易。第64中學的的確是一支強隊。