qǐng / xiān / bǎ / luó / mào / tào / zài / luó / shuān / shàng / zài / yòng / bān / shou / nǐng / jǐn

请先把螺帽套在螺栓上，再用扳手拧紧。

Put the nut onto the bolt first, then tighten it with a wrench.