如何在对象数组中克隆特定的键值对？

function cloneKeyValuePairs(objArray, key) {
  let clonedArray = [];

  for (let obj of objArray) {
    if (obj.hasOwnProperty(key)) {
      let clonedObj = {};
      clonedObj[key] = obj[key];
      clonedArray.push(clonedObj);
    }
  }

  return clonedArray;
}

let originalArray = [
  { name: 'Alice', age: 25, gender: 'female' },
  { name: 'Bob', age: 30, gender: 'male' },
  { name: 'Charlie', age: 35, gender: 'male' }
];

let clonedArray = cloneKeyValuePairs(originalArray, 'age');
console.log(clonedArray);

[
  { age: 25 },
  { age: 30 },
  { age: 35 }
]