🧩 词语组成解析
sierra
[[si'erə]]
n. 呈齿状起伏的山脉
redwood
[['redwud]]
n. (美国)红杉, 红树
🗣️ 情景例句
Six months ago.
六个月以前。
It is probably only the flu (influenza).
可能只是流行性感冒吧。
His work starts at half past eight, and finishes at a quarter to five.
30开始工作，4：45下班。