1. For it is then almost ready to undertake heavy work and can begin to earn its keep straight away.
    这个年龄的象差不多已能干重活，可以很快挣回饲养它的开支。

2. Those who seek it undertake an arduous journey and can never be sure that they will find it.
    那些寻求正义的人走的是一条崎岖的道路，从来没有把握他们最终将到正义。

3. To celebrate the tenth anniversary of the People´s Republic (1959), the government determined in 1958 that Beijing should undertake ten major building projects and complete them in ten months.
    为了庆祝中华人民共和国建国十周年（一九五九年），一九五八年，中国政府决定十个月内在北京完成十项主要建筑工程。