A better understanding of the risk factors that influence the disease's progression, said Ma, is imperative.

Ma说更好的理解影响疾病进展的危险因素是势在必行的。

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"He was my only son," said Ma Xiangqian's father, Ma Zishan, a struggling farmer of landscape plants and trees grown for use in the bustling cities.

“他是我唯一的儿子，”马向前的父亲马子善说，他是一个给大城市种植园林树木的农民。

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"These elderly people gave a great deal to society, so they deserve our love and admiration, and I would like to help them," said Ma when finishing work.

“这些老人们曾经为了这个社会做了很大的贡献，我们应该爱戴并尊敬他们，我很愿意为他们服务，”做完了工作的小马如是说。

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He was a hobo by choice: As a little boy, he'd seen a hobo come up to ask his mother for a piece of pie and she had given it to him and when the hobo went off down the road the little boy had said, "Ma, what was that fellow?" "Why, that's a hobo."

他是自愿成为流浪汉的：,当他还是个小男孩的时候，他见过一个流浪汉向他妈妈,要一块派，他妈妈给他了,于是当流浪汉离开的时候小男孩就问，“妈妈，那个家伙是谁“，“是个流浪汉“

耶鲁公开课 - 1945年后的美国小说课程节选

Remember, Newton said F = ma, but didn't tell you what value F has in a given context.

记住,牛顿只说 F = ma,但却没告诉你 F 在特定条件下的值是多少

耶鲁公开课 - 基础物理课程节选

"He is passionate about and familiar with the group's various businesses, " said Ma in the announcement.

NPR: Chinese E-Commerce Giant Alibaba Names New CEO

"Ding was brought up differently to the other stars, " said Ma Bang.

BBC: SPORT | Other Sport... | Snooker | China in Ding's hands

"The draft law it is really trying to tackle the issue in a proactive way, trying to tackle the pollution at its source, " said Ma Jun, a prominent environmentalist in Beijing and author of China's Water Crisis.

CNN: Beijing tries to clean up its act