they've perfected over many years. 向彼此表示问候

194. At first, he's a little coy.
     一开始雄性信天翁还有些害羞
195. But not for long.
     但很快就放开了
196. They greet each other with the special dance
     他们用多年来练成的独特舞蹈
197. they've perfected over many years.
     向彼此表示问候
198. There is much to do, if they're to raise a chick before winter returns.
     如果他们还打算在冬天来临前养育孩子 要做的事情还有很多
199. But when you have been apart for six months,
     但当你和某人分开大半年
200. some things can't be rushed.
     有些事需要慢慢来

来自《行星地球 第二季 第一集 Planet Earth S02E01 岛屿》第 197 行