为了避免新的城中村现象出现的恶性循环，本文最后提出了制止这种现象的几条对策。
For avoiding new vicious cycle of village in the city, at last this paper give out several countermeasures to restrain the phenomenon.
为了避免这种不希望看到的现象，一个主流道拉料机构总应在设计中加以考虑。
To avoid this undesirable feature, an arrangement for pulling the sprue should always be incorporated in the design.
为了避免考试焦虑这种不良现象的发生。
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