insane

[in’sein]

中文解释：adj. 疯狂的，精神错乱的，荒唐的

例句: For decades, scientists have been insane with extending human’s life by either applying biological experiments or medical applications. However, it is possible to extend the lifespan, not only in terms of taking exercises, but more importantly, by regulating lifestyle.

sustain

[səs’tein; sə’stein]

中文解释： vt. 维持，支持，承受，认可，经受

例句： The data A sustained the same level until 2003 while the data B dramatically boosted to its double value.