Unbuttoning
v. 解开（纽扣）( unbutton的现在分词 ); 打开; 表露; 吐露
🗣️ 情景例句
A diamond of this size is unique.
这种尺寸的钻石是独一无二的。
Why did you come home so late last night?
昨晚你为什么那么晚才回家？
What is it? asked the man.
“什么事？”楼上人问。