Catherine put all the envelopes aside unopened.凯瑟琳把所有信件放在一旁，全都未启封。We've gone through all those envelopes I bought last week.我们用完了我上周买的所有的信封。A courier was despatched with two sealed envelopes.信使受命递送两封封讫的信。What is the...
Celestite is usually diagenetic but commonly forms very early in the history of the sediment.天青石一般是成岩期的,但通常是在沉积史的极早期形成的.Reduction - metathesis method for preparation of strontium carbonate from celestite is developed.提出还...
Journalists have been congratulating themselves on the role the press has played in the investigations.记者们为新闻界在调查中所起的作用感到自豪。I was absolutely astonished by the reaction to our engagement. Everyone started congratulating u...