眼镜镜片好坏差别大吗:ost-what does it mean?

ost-what does it mean? what does it mean? what does it mean? what does it mean? aptimus ,what does it mean? What does it take to make your water usable "wolf down the food" what does it means what does "let it be" mean? what does "just do it" mean? On what page does it come? 它在哪一页？