4个数三个一组有多少组 不重复简介：Five thousand mechas, such a powerful fighting force, the earth needs 50,000 troops, which may not be able to stop it, but there are 500,000 troops here guarding this battleship.
Five thousand mechas, such a powerful fighting force, the earth needs 50,000 troops, which may not be able to stop it, but there are 500,000 troops here guarding this battleship.
