工程师说钚可能会开始从遭腐蚀的潜艇往外渗透。Engineers said that plutonium could begin seeping from the corroded sub.危险的辐射物从钚放散出来.Dangerous emissions radiate from plutonium.钚也可以用来制成核武器.The plutonium also could be used, however, to make nuclear...
Tyrannosaurus Rex was a large carnivore; insectivorous plants are considered carnivores.暴龙是一种大型的食肉动物; 食虫植物被看作食肉动物.And on your left, you have Tyrannosaurus Rex, a carnivore from the Jurassic period.在您的左边, 您看到的是暴龙, 一种来自侏罗纪...