Old bat
n. 老疯子；讨厌的老家伙；（尤指）癫婆子, 招嫌的老太婆
🧩 词语组成解析
old
[old]
adj. 老的;古老的;以前的;（用于指称被替代的东西）原来的;
n. 古时;
bat
[bæt]
n. 蝙蝠;短棍，（棒球等的）球棒，（网球等的）球拍;白话，口语，成语，俗话;（口）打击，猛击，（海上）导弹;
vt.& vi. 用球板击球，用球棒击球（尤指板球或棒球运动）;
bat =beat,表示”打,击”
🗣️ 情景例句
and he kept talking about having a house of our own.
他老说要有自己的家。
My brother gets up later than I do.
与我做比，我的兄弟晚起床。
Even more processes are never patented at all but kept as secret processes.
更多的工艺过程根本就不会取得专利权，而是作为秘方保存着。