牺牲自己的时间和精力 give of oneself
我们不怀疑,同时兼任教练的教师也面临着严肃的权衡,也许是以牺牲时间为代价,他们原本可以把这些时间用于完成学术义务。
We do not doubt that teachers who also coach face serious tradeoffs that likely come at the expense of time they could dedicate to their academic obligations.
但在全国上下,爱心洋溢的市民们都自愿牺牲时间,帮助那些有困难的人们。
And across our country, caring citizens are reaching out to those in need by volunteering their time.
翻译者提到,对他们个人来说,他们出于对美国流行文化的热爱,愿意为此牺牲时间下很大的功夫。
To a person, the translators say they are willing to devote long hours to this effort out of a love for American popular culture.
The council on educational technology in MIT has Been doing that for MIT with the help from a couple Of consultants who've actually volunteered their time.
麻省理工教育技术委员会,在一些顾问的帮助下做着这项工作,这些顾问自愿牺牲他们的时间参与其中。
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