A protecting joint is added at power head rod joint in order to prevent power head rod joint abrasion when rod is screwed or unscrewed.

在拧卸钻杆时为了保护动力头钻杆接头，防止其磨损，通常的做法是在该接头处联接一个保护接头。

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There's an angler fish at the bottom of the ocean that has a rod sticking up from the top of its head with a lure to capture other fish.

在海底中生活着一种琵琶鱼，它的头顶有一根突出的杆，带有用来捕获其他鱼类的诱饵。

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He had set up a rod in his home in St Petersburg to studylightning strikes, but he got more than he bargained for when a pale blue ballof fire emerged from the rod and struck him in the head.

他在家中立起一个铁杆来研究闪电的电击。 但是他得到了比他所希望的更多的结果：一个灰蓝色的火球出现在铁杆上并击中了他的头部。

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And due to an explosion, an iron rod passed through his head like so.

因为一次爆炸，一个铁棒像这样穿过了他的头。

耶鲁公开课 - 心理学导论课程节选

There's an angler fish at the bottom of the ocean that has a rod sticking up from the top of its head with a lure to capture other fish to fool them in thinking that this is something edible and then to themselves be devoured.

在深海中生活着琵琶鱼,这种鱼的头顶会长出鱼竿状的长刺,用于引诱和捕获其他鱼类,让它们误认为那是食物,然后它们自己就被吃掉了。

耶鲁公开课 - 心理学导论课程节选

It led to him being entrusted with the task of replacing Australian Rod Marsh as head coach of the National Academy.

BBC: Moores provides upbeat approach

Today, people who need a new ear often turn to prosthetics that require a rod to fasten to the head.

WSJ: Scientists use 3-D printing to help grow an ear

In the first point back, Li injured the same ankle and hit her head as she fell, silencing the Rod Laver Arena crowd, which wondered whether it would witness what would have been just the second retirement in a Grand Slam women's final since 1968.

WSJ: Azarenka Beats Li to Win Australian Open