This is the 7970th most frequent Chinese word.
鸭子
Duck.
Here, '鸭子' is used as a noun to refer to the animal 'duck'.
这只鸭子正在河里游泳。
This duck is swimming in the river.
Here, '鸭子' is part of a simile, comparing a person's calm demeanor to that of a duck, which might appear calm on the surface while paddling energetically underwater.
在比赛中,他像鸭子一样冷静沉着。
In the competition, he was as calm and composed as a duck.
In this context, '鸭子' refers to the meat of the duck, often in a culinary context.