A monkey wiggles its hand into a jar, grabs a tidbit, but cannot pull it out because only an open hand can go through the narrow neck.

猴子把手伸进一个罐子里，抓住了一块食物，但却拿不出来，因为只有空手才能通过罐子那狭窄的颈部。

youdao

Good power density means a shape like a peanut butter jar, easy to fill or empty; low power density is more like a wine jug with a narrow neck.

电能密度好的就像花生酱罐子口，很容易装满或倒空；电能密度差的就像窄瓶口的酒壶。

youdao

In the narrow neck of the funnel of history all the predictions, hopes, and dreams of generations came together in one small boy.

在历史漏斗的窄颈中，世代以来的预测、期盼和梦想全汇聚到这名小男孩身上。

youdao

"A wide collar can broaden a narrow neck and face by drawing the eye outward, " says Mr. Julian.

WSJ: Guide to Men's Shirt Collars: Which Styles Go With Which Occasions and Flatter the Face

As American military vehicles and troops start to arrive in Bosnia -- taking a 30-kilometer (20-mile) road toward Tuzla that they've dubbed "Route Arizona" -- some are setting up a series of small bases in the Posavina Corridor, a narrow neck of land connecting Serb territories in eastern and western Bosnia.

CNN: Bosnia begins peaceful 1996

Denton is tall and rangy, and has a famously large head that sits precariously on a thin neck and narrow shoulders, leaving the impression of an evolved brain that is perhaps a little too conscious of its pedestrian context.

NEWYORKER: Search and Destroy