Astronomers know that Pluto and Triton have nearly the same size, mass, and density.天文学家知道冥王星与海卫一拥有几乎相同的体积、质量与密度。She may be the key to Triton's undoing.她可能会成为消灭特莱顿的关键.Adding 0.1 % Tween - 80, Triton - 100 , or EDTA ...
他命令他们把几个枕头叠放在自己的背后。He ordered them to stack up pillows behind his back.萨姆舒服地枕着枕头进入了梦乡。Sam snuggled down in his pillow and fell asleep.他把闹钟塞在枕头底下，想减低声音。He tried to muffle the alarm clock by putting it under his pillow....