Pointer subtraction
[计] 指示字减法
🧩 词语组成解析
pointer
['pɔintə]
n. 建议;线索;教鞭;（测量仪器上的）指针;
🗣️ 情景例句
Some people seem too think its for practicing grammar rules and learning lists of words.
一些人认为它是用来操练语法规则和学习一大堆单词。
I'm going to show him how to sing a song.
我正要指点他如何唱歌。
To Annie I owe thanks for this priceless gift of speech.
可安妮给我这份无价的说话礼物，我对她感激不尽。