白云谦卑地站在天边,晨光给它披上壮丽的光彩。
只有不断学习,才能不断进步。
I'm the reason your watch won't tock.
In manufacturing, efficiency and environmental responsibility must go hand in hand.
The signal of human influence on climate has emerged from the noise of natural variability.
"Children are the best critics because they are honest and direct."