Another sign of ice is the presence of parallel lines and pitted material on the crater floor.

另外一个有冰存在的迹象就是陨石坑底部的并行线和无核物质。

youdao

They are best known for the Nazca lines: vast, intricate drawings etched on the desert floor, possibly sacred pathways.

他们因为纳斯卡线条而闻名于世：蚀刻于沙漠上广阔、复杂的图案，可能是神圣的路径。

youdao

"I actually like to crawl on the floor and look at the lines," he explained.

“实际上我喜欢爬在地板上查看各种建筑标线，”他解释道。

youdao

Traditionally, frontbench speakers should never step over the red lines on the floor - the two lines are exactly two sword-lengths apart (a) - as, theoretically, the MPs would be able to attack one another.

BBC: COMMONS' CHAMBER

After being driven through the streets of broken glass and police lines, he ascended to a suite on an upper floor at the Westin Hotel and flipped on local news, where he saw for the first time the scenes of chaos that had raged all around his hotel earlier that day.

CNN: ASIANOW - TIME Asia | Business: Rage Against The Machine

Meanwhile, on the Senate floor, party lines were scrambled dramatically with Democrat Ron Wyden giving Rand a hand so that today, John McCain and Lindsey Graham could denounce and demagogue a rising Republican star who whipped both pride and shame into the hearts of many a left-winger.

FORBES: Rand Paul's Filibuster: A Three Part Triumph