��这种方式使用时，import 函数返回一个 Promise 对象。这就是 ES Modules 标准中的 <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/import" target="_blank" rel="noopener noreferrer">Dynamic Imports<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,