1. The successful completion of the rehearsal proved the robustness of the contingency arrangements put in place. 
   演习顺利完成，证实业界所拟备的应变计划稳健妥当。
2. Substantial efforts were devoted to the formulation of contingency plans by the SFC and the exchanges and clearing houses. A number of sector-wide contingency drills were successfully conducted in the second half of 1999. 
   证监会、各交易所和结算所已投入大量资源来制定应变计划，并在一九九九年下半年成功进行全行业的应变演习。
3. To ensure that militiamen are always ready to respond to the call in case of a contingency, the Chinese government has formulated a militia combat readiness system, whereby combat readiness education is carried out regularly among the militia with the purpose of enhancing their national defense awareness, and exercises are conducted in accordance with combat readiness plans to enhance the militia's operational capabilities. 
   为使民兵在遇有情况时能够召之即来，中国政府建立了民兵战备制度，定期在民兵中开展以增强国防观念为目的的战备教育，有针对性地按战备预案进行演练，提高遂行任务的能力。
4. the modal logic of necessity and possibility and contingency. 
   讨论必要性可能性与偶然性的模态逻辑。
5. Depend, indicating condition or contingency, is always followed by on or upon, as in It depends on who is in charge. Omission of the preposition is typical of casual speech. 
   depend指条件或可能性，其后通常跟有on或者upon，例如这取决于谁是负责人。在非正式口语中，通常省略介词

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