至于涉及到铣刀转动的方向和工件的进给，铣削可以通过下列两种方法之一进行。
As far as the direction of cutter rotation and workpiece feed are concerned, milling is performed by either of the following two methods.
至于名人代言广告并不涉及“主角”销售，证据是复杂的。
Regarding the appearance of celebrities in advertisements that do not involve host selling, the evidence is mixed.
申请出口许可证涉及如此繁琐的程序，以至于我们变得非常灰心丧气。
Applying for an export license involved so much rigamarole that we became quite frustrated.
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