🧩 词语组成解析
sulphur
['sʌlfə]
n. 硫磺;硫磺色，黄绿色;[动]粉蝶科蝶;
v. 使硫化;用硫磺处理;在…中加硫磺;
oxide
['ɑksaɪd]
n. [化]氧化物;
🗣️ 情景例句
What are your greatest strengths?
你最大的优点是什么？
Have you finished yet?
你做完了吗？
It is fairly clear that sleeping period must have some function,
很清楚，睡眠必然具有某种作用。