'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。

But it sounds like you have a good running base and have plenty of time to prepare for a fall marathon, if it's something you feel ready to do right now. (Don't let friends pressure you into it!)

不过你似乎已经有了不错的跑步基础，也有足够的时间跑马拉松全程，如果你觉得你能力达到了的话，你不妨可以试一试(但是不要因为朋友的压力去跑马拉松)。

Turn your attention to something else and let it fall apart.

把你的注意力转到别处，彻底放弃。