Please explain the meaning of sighing, moping, aging, dying, impressively and portraiture?

Sigh: sigh: sigh. I can't stop sighing because of sadness, boredom and pain. A deep sigh, a short sigh. Describe a worried look.

Glum: Unhappy, upset. Describe the feeling of boredom and unhappiness.

Old age: describes old age, physical decline, and inflexible actions.

Dragon bell [lóngzhōng] describes the inflexibility of movements.

The wind candle is dying: the wind candle: the lamp candle swaying in the wind is easy to blow out; Years remaining: years remaining. This is a metaphor. The old man's days are numbered and he will die at any time.

Impressive: 1. Describe something that suddenly appears surprising or striking. (The first line of page 9 1 of Mr. Wen Yiduo's Speaking and Doing in the seventh grade of junior middle school Chinese People's Education Edition) 2. The appearance of red (Hector: generally refers to red) 3. Unique meaning. (The meaning in lesson 19 of the first volume of the sixth grade of People's Education Press, and the second lesson "One Side" of the second volume of the seventh grade of Jiangsu Education Press)

Portrait: Consistent with' Portrait', Chinese originally meant to draw portraits of people, which is the traditional name of figure painting in China. Painting a portrait requires simplicity, so it is called a portrait. Nowadays, art photography is commonly known as art photo album. "Portrait" in China's ancient painting theory refers to "writing the truth of things", that is to say, when painting, it is necessary to show the true face of objects, and both landscape painting and figure painting should reach the "true" painting realm.