A plant that when touched or ingested in sufficient quantity can be harmful or fatal to an organism. 当被大量的接触到或吸收时,会对机体造成损伤或致命危害的一种植物。
The first priority is to provide a sufficient quantity of water, even if its safety cannot be guaranteed, and to protect water sources from contamination. 首要重点是即使其安全性不能得到保证,也要提供充足数量的水,并保护水源避免污染。
That would almost certainly mean something akin to photosynthesis was going on, for no known non-biological process can produce oxygen from common materials in sufficient quantity. 而这也就基本上意味着星球上进行着某些类似于光合作用的活动,因为在我们已知的非生物学过程中,没有一种过程可以在普通材料供应充足的情况下产生氧气。
And that now I had all these to a sufficient quantity, and was in a fair way to provide my self in such a manner, as to live without my gun when my ammunition was spent; 可是现在,这些东西我都有,而且相当充足,即使以后弹药用尽了,不用枪我也能活下去。
However, it is unclear whether these positrons can escape from the stellar debris in sufficient quantity to explain the size of the observed cloud. 然而,尚不清楚是否有足够数量的正电子能够逃离恒星残骸以解释观察得到云团的大小。