自用 Roam Bookmarklet分享，新建一个书签，粘贴进去即可

roam-to-read.js

javascript:(function(){
  var title = document.getElementsByTagName("title")[0].innerHTML;
  var url = window.location.href;
  var selectText = '';
  if (window.getSelection) {
      selectText = window.getSelection().toString();
  } else if (document.selection) {
      selectText = document.selection.createRange().text;
  }
  var node = document.createElement('textarea');
  var selection = document.getSelection();
  node.textContent = '__' + selectText + '__' + '[' + title + '](' + url + ')[[to read]]';
  document.body.appendChild(node);
  selection.removeAllRanges();
  node.select();
  document.execCommand('copy');
  selection.removeAllRanges();
  document.body.removeChild(node);
})();