译文及注释：
译文：
风急天高猿猴啼叫显得十分悲哀，水清沙白的河洲上有鸟儿在盘旋。
The wind is strong and the sky is high the cries of monkeys sound very sad and birds are hovering above the clear water and white sand of the river island.
无边无际的树木萧萧地飘下落叶，望不到头的长江水滚滚奔腾而来。
Endless trees are rustling with falling leaves and the endless Yangtze River is rushing towards us.
悲对秋景感慨万里漂泊常年为客，一生当中疾病缠身今日独上高台。
Feeling deeply moved by the autumn scenery I have been drifting for thousands of miles as a wanderer all year round. Throughout my life I have been plagued by illness and today I am alone on this high platform.
历尽了艰难苦恨白发长满了双鬓，衰颓满心偏又暂停了浇愁的酒杯。
Having experienced hardships and bitter regrets my white hair has grown on both temples. I am full of decline and despair but I have temporarily stopped pouring the cup of sorrow.
注释：
诗题一作《九日登高》。古代农历九月九日有登高习俗。选自《杜诗详注》。作于唐代宗大历二年（767）秋天的重阳节。
The title of the poem is also known as Climbing on the Ninth Day. In ancient times there was a custom of climbing on the ninth day of the ninth lunar month. Selected from Detailed Annotations of Du Shi. It was written during the Chong Yang Festival in the autumn of the second year of Tang Dynasty's Dali reign (767).
猿啸哀：猿凄厉的叫声。《水经注·江水》引民谣云：“巴东三峡巫峡长，猿鸣三声泪沾裳。”
The mournful cry of monkeys: the mournful cry of monkeys. Shui Jing Zhu · Jiang Shui quotes a folk song: In the Three Gorges of Badong in Ba the cries of monkeys three times tears wetting their clothes.
渚(zhǔ)：水中的小洲；水中的小块陆地。
Zhǔ: a small island in the water; a small piece of land in the water.
鸟飞回：鸟在急风中飞舞盘旋。回：回旋。
Birds flying back: birds flying and circling in the strong wind. 回 means circling.
落木：指秋天飘落的树叶。
Falling leaves: refers to the leaves falling in autumn.
萧萧：模拟草木飘落的声音。
Xiao xiao: imitates the sound of falling leaves.
万里：指远离故乡。
Thousands of miles: refers to being far away from home.
常作客：长期漂泊他乡。
Being a guest often: long-term wandering in a foreign land.
百年：犹言一生，这里借指晚年。
A hundred years: referring to one's lifetime here it refers to old age.
艰难：兼指国运和自身命运。
Difficulties: also refers to the fate of the country and oneself.
苦恨：极恨，极其遗憾。苦，极。
Bitter regrets: extreme hatred extreme regret. 苦 means extreme.
繁霜鬓：增多了白发，如鬓边着霜雪。繁，这里作动词，增多。
Frosty temples: an increase in white hair like frost on the temples. 繁 is used as a verb here meaning to increase.
潦倒：衰颓，失意。这里指衰老多病，志不得伸。
Down and out: decline frustration. Here it refers to being old and sick with unfulfilled aspirations.
新停：刚刚停止。杜甫晚年因病戒酒，所以说“新停”。
Just stopped: just stopped. Du Fu quit drinking due to illness in his later years so he said just stopped.