time.sleep(2 ** attempt) # 指数退避
���f�B�A�ꗗ | ����SNS | �L���ē� | ���₢���킹 | �v���C�o�V�[�|���V�[ | RSS | �^�c���� | �̗p���� | ������
。业内人士推荐heLLoword翻译官方下载作为进阶阅读
He only learned it had been aired on TV when he saw his phone around 03:00 GMT, including messages from the US as the news reached it.
* @param {number} val - 当日股票价格