第117期:天体物理学

Astrophysicists working with ground-based detectors at the South Pole and balloon-borne instruments are closing in on such structures, and may report their findings soon.

译文：

天体物理学家们使用南极陆基探测器和球载仪器，他们正越来越近地观测这样的云系，也许不久就会报告他们的观测结果。

点睛：

该句的主干是Astrophysicists...are closing in on such structures, and may report...。并列的谓语部分是are closing in和may report。现在分词短语working with. instruments作astrophysicists的后置定语，其中at the South Pole说明了detectors的位置，soon为report的时间状语。短语close in( on sb. /sth.)意为“（尤其为了进攻）逼近，靠近（人／ 物）”。

考点归纳：

与动词close相关的常见短语还有：

*close down永久性关闭，停业
That shop was closed down．
那家商店停业了。

*close off隔绝，封锁
The lane is closed off for repairs.
该车道由于维修而被封锁了起来。

*close out抛售
They are closing out the coats.
他们正在抛售外套。