Centered difference
[计] 中心差分
🧩 词语组成解析
a. 居中的\\n[计] 居中的
🗣️ 情景例句
A friend in need is a friend indeed.
患难朋友才是真正的朋友。
They walk as if they were drugged.
他们走路像服了什么药物似的摇晃着。
'Do you call that a hat?' I said to my wife.
“你把那个叫帽子吗？”我对妻子说。