dirty spot

基本解釋

Moreover, it is not a local dirty spot but the whole lake is polluted.
除此之外，臟的并不是局部，而是整個湖泊都被污染了。
The law is like a mirror which can show us a dirty spot on our face but the mirror can't wash it off.
律法就如一面鏡子，反照出我們臉上的污穢，但鏡子卻不能把污穢除掉。
It is analyzed that electrode surface sticks dirty spot unevenly and electric field varies irregularly during welding the phosphorized weldment by 3-phase DC projection welder secondary rectification.
分析了三相次級整流凸焊表面磷化構(gòu)件時，產(chǎn)生電極表面不均勻粘污，從而引起電流場發(fā)生畸變的原因。

The idea is that the vaccines will train T cells to spot cancer, while the antibody will make sure the T cells remain activated long enough to do their dirty work.
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