ibmwatson/developercloud/doc/language-translation/">Language Translator</a> service.</p>
<pre class="prettyprint source lang-javascript"><code>var watson = require('watson-developer-cloud');

var language_translator = watson.language_translator({
  username: '&lt;username>',
  password: '&lt;password>',
  version: 'v2'
});

language_translator.translate({
  text: 'A sentence must have a verb', source : 'en', target: 'es' },
  function (err, translation) {
    if (err)
      console.log('error:', err);
    e