Optimum span control
[经] 最适当的控制范围
🧩 词语组成解析
span
[spæn]
n. 共轭（马、骡）;跨度，墩距;一段时间;[航] 跨绳;
vt. 缚住或扎牢;跨越时间或空间;以掌测量;以手围绕测量类似测量;
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;
🗣️ 情景例句
Let me give you a little fatherly advice.
让我像父亲般给你提点建议。
That's terrible!
真是太惨了！
The sorry-looking, blackened figure that emerged, admitted at once that he had tried to break into the shop during the night but had got stuck in the chimney.
那个看来满脸沮丧、浑身漆黑的家伙从烟囱里一出来，就承认头天夜里他企图到店里行窍，但让烟囱卡住了。