Underfill
n. [冶](孔型)未充满
🗣️ 情景例句
I think I'll take the afternoon off.
我想下午休息。
It's her birthday and she wants to gives us all a treat.
这是她的生日，她要款待我们大家。
The search proved difficult, for the puma was often observed at one place in the morning and at another place twenty miles away in the evening.
事实上搜寻工作很困难，因为常常是早晨在甲地发现那只美洲狮，晚上却在20英里外的乙地发现它的踪迹。