Beilstein test
[机] 贝尔斯登试验
🧩 词语组成解析
🗣️ 情景例句
How much do stamps cost?
邮票多少钱？
He always takes pride in his work.He's very efficient.
他总是以他的工作而自豪，他是非常能干的。
There, a child grows up under the ever-present attention of his parents;
荒凉地区的孩子无时无刻不在父母关怀下成长。