英
他做完练习，就放下笔。Tapping the pen twice is equivalent to double-cpcking a mouse.
轻击两下笔，这相当于双击了鼠标。
Penon
['pend'aʊn]
美['pend'aʊn]
n.下笔pen-down的用法和例句：
例句
用作名词(n.)After he finished his exercise,he put down his pen.他做完练习，就放下笔。Tapping the pen twice is equivalent to double-cpcking a mouse.
轻击两下笔，这相当于双击了鼠标。
pen-down的相关资料：
临近单词
penPenon