The only convincing evidence for life on Mars will be when we have a microbe in the lab from a sample return mission.

火星上存在生命的唯一可信依据将会是我们实验室里有从返回任务带回的样本中提取的微生物。

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Announcement of the cause of death came just hours after a lab employee was detained and then released by police after he gave a body-tissue sample.

在死因宣布前仅仅几个小时，警方带走了一位实验室雇员，并在他同意提供身体组织样本后将其释放。

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I had my suspicions about the milkshake, and so I took a sample and I rushed it down to the lab.

我怀疑奶昔有问题，于是我取了一份样品，跑到实验室化验。

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I had my suspicions about the milkshake, and so I took a sample and I rushed it down to the lab.

我怀疑奶昔有问题，于是我取了一份样品，跑到实验室化验。

耶鲁公开课 - 死亡课程节选

We go from a four inch lab sample to a six inch cell.

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His approach involves taking a muscle biopsy from a patient's thigh and then growing the tissue sample in the lab for three weeks until there are 600 million to 800 million of the myoblast cells.

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The long awaited drug test on Floyd Landis' backup urine sample begins today in a French lab.

NPR: Landis Facing Uphill Battle on Doping Charges