The experiments had been done on briefly soaked rocks.

这些实验是在简单浸泡的岩石上做的。

youdao

Before 1815 manufacturing in the United States had been done in homes or shops by skilled artisans.

1815年以前，美国的产品制造是由熟练的工匠们在家里或商店里完成的。

youdao

She knew it would be difficult to undo the damage that had been done.

她知道难以挽回已造成的损失。

《柯林斯英汉双解大词典》

Earlier observations about the movement of galaxies had been done by V.M.Silpher.

VOA: special.2009.04.29

Look at line fifty-five: "Ay me, I fondly dream! / ?" Had ye been there -- for what could that have done?"

看第55行：“哎，我啊！，我在痴呆的幻想/,如果你们女神们在那儿，又能怎样呢“

耶鲁公开课 - 弥尔顿课程节选

And how far in advance he had even been thinking about some of the stuff that he had done

他很早前就开始构思他的作品了，

和男朋友在一起 - SpeakingMax英语口语达人

In the final report produced on Tuesday by Seoul National University, they did indicate that Hwang was on to something with the creation of human blastocytes, early embryos, but what he had done had been quite unstable.

NPR: Author of Debunked Stem-Cell Papers Apologizes

For 1, the science had been done since Newton, the basic feasibility had been demonstrated (V2s, Sputnik), and it was a matter of money.

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Trouble is, this is the first time anything had been done, even though Leong Hin's stock had been exhibiting suspicious trading behavior for more than a year and a half--rising and falling over roughly six-month cycles by almost identical amounts, regardless of movements in the local market and with little news from the company.

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