词汇	the black pigment of skin
释义	the black pigment of skin 皮肤黑素
随便看	ground to air ground-to-air ground-to-air bomber destroyer ground-to-air channel ground-to-air command radio station ground-to-air command vehicle ground-to-air communication ground-to-air communications ground to air data communication ground-to-air datalink ground to air data link Ground-to-Air Data Link ground to air defense ground-to-air defense ground-to-airg/a ground-to-air guided missile ground-to-air jammer ground-to-air jamming ground to air missile ground-to-air missile gro und-to-air missile ground-to-air missile camp ground-to-air missile equipment ground to air missile system ground-to-air missile troops