baby boom

中文解释：婴儿潮

例句：At the same time, the problem has been raised that the baby boom, which is a reason of population explosion, has been another social issue followed by the greying population.

lethal

[‘li:θəl]

中文解释： adj. 致命的，危险的，有效的

例句：It is extremely lethal for people who consume deathcap muchrooms without attentions.