You cannot take a day off without authorization.未经批准你不得休假。It's annoying to have to get authorization for spending such piddling amounts of money.花这麽一点钱也要去请示,真烦人.Formal authorization for the trip was given last week....
You may not enter the security area without authorization.未经批准不得进入警戒地区。Formal authorization for the trip was given last week.这次行程上周得到正式批准.Anglers are required to obtain prior authorization from the park keeper.垂钓者必须事先得到公...
锕射气氡的一种放射性的, 惰性的和气态的同位素, 其半衰期为3.A radioactive, inert, gaseous isotope of radon, with a half - life of 3.92 seconds.讨论了该离子交换法在分离锕 - 镧系元素上应用的可能性.The possibility of its potential application is discussed for separation of a...
卢就各种芝麻小事唠叨个没完，后来我烦得都想尖叫了。Lou prattled on about various trivialities till I wanted to scream.相信我，这是我最起码能做的了，只是小事一桩。Believe me, it's the least I can do, a mere trifle.他为一点小事就大发脾气。He flew off the handle at the slightes...