Natural immunity
[医] 天然免疫
🧩 词语组成解析
natural
['nætʃrəl]
adj. 自然的;物质的;天生的;不做作的;
n. 自然的事情;（生来的）白痴;[乐]（风琴等的）白键;
natur=nature自然+al...的 →自然（界）的
immunity
[i'mju:niti]
n. 免除，豁免;免疫力;
🗣️ 情景例句
He ventured to speak to her.
他鼓起勇气向她说话。
I'm not really sure.
我不太清楚。
So he had gone to the stores and had obtained a fixture that fitted both the tap on the supply line and the end of the air-line.
所以他就到仓库找到一个既适合供应管也适合供气管的接头。