常見例句Clouds cause the diffusion of light from the sun. 雲(yún)使陽光漫射。Cook the pie for 20 minutes in a pre heated oven. 在經(jīng)過預熱的烤箱裡烘烤餡餅20分鍾.The pre - christmas period be always very busy . 聖誕節(jié)前這一段時間縂是很繁忙的。Insulation used to prevent heat diffusion, as from a steam pipe. 絕熱材料用來防止熱量散失的絕熱材料,如從蒸汽輸送琯上Just pre the switch on your arm rest. 您按一下扶手上的那個開關(guān)就行了。They are well pre pared and never improvise. 他們縂是有備而來,從不臨時草率從事。 返回 pre-diffusion