R acid
[化] R酸; 2-萘酚-3,6-二磺酸
🧩 词语组成解析
🗣️ 情景例句
Hi Leo, do you know Jack Wang?
嗨，利奥，你知道杰克王吗？
He said he spoke a little English.
他说他会说一些英语。
Though she hesitated for a moment, she finally went in and asked to see a dress that was in the window.
她虽然犹豫了片刻，但终于还是走进了商店，要求把陈列在橱窗里的一件衣服拿给她看。