1. With me to complete this arduous task bar! ����һ���������������ɣ�
2. On this extraordinary day, we should also be soberly aware that it is an arduous task to realize the four modernizations. �������ƽ�������������ҲӦ�����ѵؿ�����ʵ���ĸ��ִ�����������ʮ�ַ��صġ�
3. Therefore, striking network tort that the activity and construction network culture having Chinese characteristics is a arduous, long-term mission. ���ԣ����������Ȩ��ͽ������й���ɫ�������Ļ���һ����ġ����ڵ�����
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adj.
1. characterized by toilsome effort to the point of exhaustion; especially physical effort
2. taxing to the utmost; testing powers of endurance
3. difficult to accomplish; demanding considerable mental effort and skill