🧩 词语组成解析
n. 瀑布;陨石
🗣️ 情景例句
I'm taking 19 credit hours.
我修了十九个学分。
How long will your offer hold good?
一般你们报盘的有效期是多长?
who put his questions to nature instead of to the ancients,
他向自然界而不是向古人提出问题,