The Greenland samples haven't been growing for as long and so far don't show much signs of giving off methane - but perhaps they just need more time, she reported at the meeting.

格陵兰岛的样品在相同的培养时间内没有生长也没有甲烷产生的迹象，不过瓦德姆在会上表示有可能是时间问题。

youdao

Conventional analysis techniques require small samples of the work for testing, further damaging the book. But analyzing the gases coming off of the old books is noninvasive.

常规的旧书鉴定方法需要提取样本进行检测，这会进一步损害书籍，而分析这些旧书散发出来的气味则完全是无害的。

youdao

It even scraped off the product's name where it appeared below the samples.

三星甚至刮掉了样品下的产品名称。

youdao

It has sent off samples for virus tests, which have so far been negative.

BBC: Lambs

Other samples would be shipped for off-site analysis under strict protocols to protect the samples and ensure an unbroken chain of custody.

BBC: How to investigate chemical weapons allegations

There is no guarantee against unscrupulous inspectors clandestinely collecting samples and conducting off-site analysis to glean information on the chemical content of American products and the processes involved in making them.

CENTERFORSECURITYPOLICY: Chemical Weapons: Say No to This Troubled Treaty