Question

lump 【lump】n.堆；团；大量On his desk, many articles and documents are always piled in great lump.在他的桌上，许多东西和文件总是被堆成一大堆。

Accepted Answer

[lʌmp] 
lumpa compact mass
If it's hard to determine its shape and otherwise looks like a big blob of something, it's probably safe to call it a lump.
Jabba the Hut looks like a disgusting lump. So does the growing mound on your noggin where you walked into the glass door. And if you've been lumped together with a bad bunch, you might have been grouped with people indiscriminately. But all lumps aren't bad. Little old ladies put lumps of sugar into their tea. And that choked up feeling you get during a sappy movie? That's just a lump in your throat.
All forms of 'lump' will appear on average once every 474 pages.lumplumperlumpishlumpy

Front	lump
Pron	[lʌmp]
Back	【lump】n.堆；团；大量 On his desk, many articles and documents are always piled in great lump. 在他的桌上，许多东西和文件总是被堆成一大堆。
Vocab	lumpa compact mass If it's hard to determine its shape and otherwise looks like a big blob of something, it's probably safe to call it a lump. Jabba the Hut looks like a disgusting lump. So does the growing mound on your noggin where you walked into the glass door. And if you've been lumped together with a bad bunch, you might have been grouped with people indiscriminately. But all lumps aren't bad. Little old ladies put lumps of sugar into their tea. And that choked up feeling you get during a sappy movie? That's just a lump in your throat. All forms of 'lump' will appear on average once every 474 pages. lump lumper lumpish lumpy

Lump Lʌmp Lump】N.堆；团；大量 Desk Articles Documents Piled Great