1. be at pains to do sth. 
	下苦功;花大力气 
	e.g. She was at great pains to stress the advantages of new system. 
	她极力强调新制度的优点。 
	 
	2. for your pains 
	作为回报;作为答谢 
	e.g. I told her what I thought and got a mouthful of abuse for my pains! 
	我跟她讲了我的想法,而得到的回报竟是破口大骂! 
	 
	3. take (great) pains (to do sth.) / go to great pains (to do sth.) 
	兢兢业业地做某事;费力地做某事 
	e.g. The couple went to great pains to keep their plans secret. 
	这对夫妇煞费苦心,对计划守口如瓶。 
	 
	4. take (great) pains with / over sth. 
	小心翼翼地做某事 
	e.g. He always takes great pains with his lectures. 
	他总是仔细用心地准备讲稿。 
	 
	5. painstaking 
	辛苦的;需专注的 
	e.g. painstaking research 
	细心的研究 
	e.g. The event had been planned with painstaking attention to detail. 
	这次活动的细节是经过精心计划的。 
	 
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