vulnerable period meaning in English

易颤期
易激期
易损期

" there is a need to assure the public of our determination to protect them during this perceived vulnerable period , and to enlist their support for our efforts to prevent crime
邓竟成说：警队有需要确保公众人士知道我们有决心在这段被认为较易发生罪案的日子给予他们安全的保证；同时，我们亦需要他们的支持以防止罪案。
The environment in dhv is facing the serious vulnerable period in the history due to its nature situation of half - year dry period , fragile geological structure and shallow soil , and its social situation of over dense population and over farming
由于干热河谷地区的地质结构不稳定、土层浅薄、人口膨胀、过度耕种，尤其长达半年的旱季等原因，导致该地区的生态环境处于极端的脆弱阶段。