Sigma bond
[化] σ键
🧩 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
Do you get the picture?
明白是怎么回事了吗？
All are not saints that go to church.
去做礼拜者，未必皆圣人。
Mr.Thompson is going to sell it because it is haunted.
汤普森先生之所以想卖它，是因为那里常闹鬼。