Pre-Sinian

基本解釋

The Lower Yangtze region containing a pre Sinian metamorphic basement, has entered an episode of intraplate evolution since the Sinian.
下?lián)P子具有前震旦系變質(zhì)基底，自震旦紀(jì)進入板內(nèi)演化。
Cook the pie for 20 minutes in a pre heated oven.
在經(jīng)過預(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)前這一段時間總是很繁忙的。
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.
他們總是有備而來，從不臨時草率從事。