'you basically let the crystal fall on something, black or dark-colored, and then you have to pick it up with a toothpick or brush and put it on a glass slide,' Libbrecht said.

'基本上就是让晶体落在黑色或深色的背景上，然后用个牙签或刷子把它弄到玻璃幻灯片上，'利波瑞特介绍说。

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Play every day to getting dark, we only get enough to go home. At home, I polished clean slide and carefully placed in a corner.

每天玩到天快黑了，大家才意犹未尽的回家。回到家中，我把滑板擦得干干净净，小心放在墙角。

youdao

In his book "Worrying," Francis o 'gorman notes how quickly the good kind of anxiety can slide into the dark kind.

弗朗西斯·奥戈尔曼(Francis oGorman)的《忧虑》(Worrying)一书指出，好的焦虑也可以很快变成阴暗的焦虑。

youdao

While many hope the improved transatlantic coordination will stop the downward slide, recession looms over both sides of the Atlantic like a dark cloud.

NPR: European Rescue Plan Being Ironed Out In Brussels