Control butter
[医] 对照试验
🧩 词语组成解析
control
[kən'trol]
vt. 控制;管理;限制;支配;
n. 支配权;操纵者;（对国家、地区、机构等的）管理权;（键盘上的）控制键;
butter
['bʌtɚ]
n. 黄油;黄油状的食品;奉承话;焊膏;
vt. 抹黄油于…上;用黄油煎食物;讨好;
🗣️ 情景例句
I can hardly keep my eyes open.
我简直睁不开眼睛了。
I invited him to come in, but he wouldn't.
我请他进来，但是他不肯。
The settlers built railways across the plains and began to hunt even more bison.
殖民者在平原上修起了铁路，于是开始猎取更多的野牛。