单词学习：heap 名词/动词
heap
/hiːp/
n. 堆；大量；许多 v. 堆积；堆满
A heap of students' homework was piled on Mr. Gu's desk, waiting to be graded.
顾老师的桌子上堆着一大堆学生作业，等着批改。
单词卡片
卡片已就绪
