All it required was a bit of work.
它所需要的只是少量工作。
它是必需的吗?
As well as duplicate prints, it required two projectionists.
因为它不仅需要成对的拷贝,而且还需要两个放映员。
It can provide thick green grass without the work or wait required to grow a lawn from seed.
VOA: special.2009.07.07
Now, the polio vaccine that Salk produced was very effective, but it required a fairly large dose of the vaccine and it had to be injected into the arms of children.
索尔克生产的小儿麻痹症疫苗效果显著,但是,该疫苗的单支注射剂量非常大,而且必须通过小孩的手臂进行注射
Is it required for freshman?
这是大一新生的必修课吗?
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