妈妈,我们谈话时你不必陪着.Mommy, you don't need to stay while we talk.他谈话时,一架军用喷气式飞机在镇子上空呼啸而过。As he talked, an airforce jet screamed over the town.创作这本书的想法来源于跟菲莉帕·布鲁斯特的谈话。The idea for this book grew out of conversations with Ph...
它意味着外生的铀进入到沙岩中.It includes epigenetic uranium impregnations in sandstone.当TS2成立时我们说解释变量是严格外生的.When TS 2 holds we say the explanatory variables are strictly exogenous....