hard lump

基本解释

A half year about time hard lump grows up unceasingly.
半年左右的时间硬块不断长大。
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The whelk usually may divide into the hard lump smallpox, pustule smallpox and the dome-shaped smallpox.
青春痘通常可分为硬块痘、脓包痘和丘状痘。
blog.sina.com.cn
A good curative effect can be gained by using the method of lowering the adverse Qi to removing food stagnancy, resolving phlegm and removing blood stasis and resolving hard lump.
认为胃石症的发病关键在于胃腑通降失司，气滞、食停、痰浊、血瘀为其主要病理因素，临证灵活运用降气消积、化痰祛瘀法，同时辅以软坚散结法可取得显著疗效。

The problem with the lump-of-labour fallacy is that it is so hard to kill.
ECONOMIST: Why the old should not make way for the young