please note清注意pleaseadv.请（=plz）v.使高兴；使满意；愿意；取悦Please come at your convenience.请在你方便的时候前来。Please respond to the questions.请回答这些问题。Please open the air conditioner.请把空调打开一下。Please fasten your seat-belts.请系好安全带.Please select a shipping option.请选择一个配送货物的方式。Please come home early tomorrow.我可以买你的一个小时吗?Please keep receipt for records.请保存好发票。Please consult the online guide.请参阅联机指南。Please tick the appropriate box.请在适合的方框内打钩。Please maintain current heading.请保持目前航向。