Primary emission
[化] 一次排放
?? 詞語組成解析
primary
['pra?m?ri]
adj. 首要的，主要的;最早的，原始的;[地質學]原生的;基本的;
n. 第一位;最好者;要素;候選人提拔會;
prim第一，主要的+ary形容詞后綴 → 第一的，最開始的 → 最初的；根本的
??? 情景例句
Don't forget to take lots of pictures.
別忘了照些照片。
I'd appreciate your kind consideration in the coming negotiation.
洽談中請你們多加關照。
I think it would be a good idea to have comments from secretaries and typists who are already using it. Then they can express their satisfaction with the product.
我認為，聽聽使用過這種計算機的秘書和打字員的反映，倒是個好主意。他們可以發表對產品滿意的意見。