短语讲解：

1.  But, before it hits the bottom, you flip the container upside down.

upside down 颠倒，倒转
例句：Turn the vat upside down. 
把缸扣过来。 

2. They look for changes in the worms' epigenome.

look for 寻找（某人或某物）
例句：I look for you everywhere continuously! 
我一直在到处找你！ 

3. Mr. Sabanayagam studies the epigenome as it relates to microgravity.

relate to 涉及; 同…有…关系
例句：All these questions relate to philosophy. 
这些问题都跟哲学有关。 

4. He says he hopes information gathered from the worm studies can be used to develop simple, low-cost and quick tests to measure an astronaut's health.

be used to 习惯于，适用于
例句：It is said that the plant can be used to treat hepatitis. 
据说那种植物可用来治肝炎。