Spontaneous emission
[化] 自发发射
🧩 词语组成解析
🗣️ 情景例句
Of course.
当然。
Packing charges are excluded in the quoted prices.
包装费用未算在报价中。
I went downstairs and sat in front of the television pretending to read.
便来到楼下坐在电视机前假装看书。