pre-heat

v [Tn esp passive 尤用於被动语态] heat (sth) beforehand (esp an oven to a specified temperature before putting food in it to cook) 预热（某物, 尤指烤箱, 待达到一定温度後将食物放入进行烹调）: Cook the pie for 20 minutes in a pre-heated oven. 在经过预热的烤箱里烘烤馅饼20分钟.

prayer-mat (also `prayer-rug), prayer-meeting, prayer-wheel, praying mantis, pre-, pre-arrange, pre-arranged, pre-arrangement, pre-cast, pre-condition, pre-conditioning, pre-eminence, pre-eminent, pre-eminently, pre-empt, pre-emption, pre-emptive, pre-exist, pre-existence, pre-existent, pre-natal, pre-ordain, pre-package, Pre-Raphaelite, pre-record, pre-recorded, pre-school, pre-set, pre-shrunk, pre-stressed, pre-tax, pre-war, preach, preacher, preachy, preamble, prebend, prebendary, precarious, precariously,