Pointer expression
[计] 指示字表达式
🧩 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
I've seen you in it.
我曾见过你那身打扮。
Don't whistle until you are out of the wood.
没有脱离险境，不要过早高兴。
So the number of stars that we know exist is now estimated at about 300 million million million.
因此，我们所知道的现有恒星数目估计约有30亿×1000亿颗。