colonel
n
(a) army officer between the ranks of lieutenant-colonel and brigadier, commanding a regiment (陆军)上校.
(b) officer of similar rank in the US air force (美国空军)上校. =>App 9 见附录9.
Knowledge will not be aquired without pain and application.
不花力气,不下功夫是得不到知识的。
If the landscape is hidden from view, you can enjoy the extraordinary sight of unbroken cloud plains that stretch out for miles before you, while the sun shines brilliantly in a clear sky.