🧩 词语组成解析
fir
[fə:]
n. 冷杉;[植]枞木;
abbr. food-irradiation reactor 食物辐射（杀菌）用反应堆;firkin 弗京;
n. 石松
🗣️ 情景例句
She takes her exams next week, so she's burning the midnight oil.
她下周要考试，所以在开夜车。
Please call me before you come.
你来之前请打电话。
Even if a piped water supply is safe at its source,
既使管道供水系统在水源处是安全的，