Positive spit
[医] 结核菌阳性唾沫
🧩 词语组成解析
positive
['pɑzətɪv]
adj. 积极的;确实的，肯定的;[数]正的;[医]阳性的;
n. 正面;正片;[语]原级形容词;[数]正量;
posit肯定+ive形容词后缀 → 肯定的；积极的
spit
[spɪt]
vt. 吐，吐出;
n. 唾沫;口水;烤肉叉;
vi. 吐痰，吐口水;发出劈啪声;
🗣️ 情景例句
I generally go to bed at ten.
我通常十点钟睡觉。
Every time the sheep bleats it loses a mouthful.
羊每叫一次，就少吃一口。
At that time, however, she was not only the largest ship that had ever been built, but was regarded as unsinkable,
当时，这艘轮船不仅是造船史上建造的最大的一艘船，而且也被认为是不会沉没的。