Sigma test
[医] 西格马试验, Σ试验(检梅毒的絮凝反应)
🧩 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
Her illness kept her in bed for a week.
她因生病而在床上躺了一星期。
Mary is in her freshman year.
玛丽大学一年级。
Here you can see two workers who, between them, have just finished cutting three cartloads of golden brown macaroni stalks.
这里您可以看到两个工人，他们协力割下了3车金黄色的通心粉秸。