您可以使用grecaptcha.render()并传入语言来根据自己的喜好进行更改。请注意，在调用render之前，您必须删除前面的captcha元素。

// your desired language
let captchaLang = 'de';
let captchaSiteKey = '...';
let captchaElemId = 'container';

let captchaCallback = (e) => {
  document.querySelector('#' + captchaElemId).remove();     
  // deal with success
  // ...
};

// create new elem based on old one, keeps the styling
// you could also just use document.createElement()
let old = document.querySelector('#' + captchaElemId);
let clone = old.cloneNode(false);
old.replaceWith(clone);

// render captcha with new language
grecaptcha.render(captchaElemId, {
  sitekey: captchaSiteKey,
  callback: captchaCallback,
  hl: captchaLang
});