常見例句Clouds cause the diffusion of light from the sun. 云使陽(yáng)光漫射。Cook the pie for 20 minutes in a pre heated oven. 在經(jīng)過(guò)預(yù)熱的烤箱里烘烤餡餅20分鐘.The pre - christmas period be always very busy . 圣誕節(jié)前這一段時(shí)間總是很繁忙的。Insulation used to prevent heat diffusion, as from a steam pipe. 絕熱材料用來(lái)防止熱量散失的絕熱材料,如從蒸汽輸送管上Just pre the switch on your arm rest. 您按一下扶手上的那個(gè)開關(guān)就行了。They are well pre pared and never improvise. 他們總是有備而來(lái),從不臨時(shí)草率從事。 返回 pre-diffusion