Sigma storage
[计] 求和存储器
🧩 词语组成解析
[计] 求和\\n[医] σ(希腊文第十八个字母)
🗣️ 情景例句
The pollution in Beijing is alarming.
北京的污染给人们敲起了警钟。
I'm sure I've forgotten something ,but it's too late now.
我肯定我忘记了一些东西，但是它现在是太迟了的。
It has been found that certain bats emit squeaks and by receiving the echoes,
人们发现，某些蝙蝠能发出尖叫声，