"The brain is an inaccessible organ. You can't get bits of somebody's brain in life. So now for the first time we can grow in a dish the neurons that are very closely related. They're identical essentially to the neurons inside the brain of a patient that we couldn't

get access to

before."

BBC News

makeshift n. 权宜之计；临时措施；凑合；将就

adj. 临时的；权宜之计的；凑合的

The makeshift fare would have to sustain him through the night.

今天他就得靠这些七拼八凑的食物过夜了。

defoliant n. （美）[农药] 落叶剂；[农药] 脱叶剂

The crash had spilled a noxious defoliant into the planet's ecology, ravaging the native flora.

这次坠毁将一种有害的落叶剂洒入星球的生态系统中，破坏着当地的植物群。

degenerative adj. 退化的；退步的；变质的

A degenerative disease.

一种变性疾病

abide by :遵守；信守；承担…的后果

She do not abide by the term of the agreement.

她没有遵守协议的条款。

prop up v. 支撑；支持

Money would prop up your head?

钱能支起你的头来吗？

vegetation cover :植被（覆盖）；植物覆盖层

Poor vegetation cover, serious soil erosion.

植被覆盖差，水土流失严重。