【文章难句】
They could still invalidate Fourth Amendment protections when facing severe, urgent circumstances, and they could take reasonable measures to ensure that phone data are not erased or altered while a warrant is pending.
【词汇打破】
warrant
n. 依据；证明；正当理由；委任状
vt. 保证；担保；同意；辩解
【结构剖析】
本句的骨干是由 and 衔接的并列句，第一个小句的骨干为 They could still invalidate Fourth Amendment protections，when facing severe, urgent circumstances 表时刻的随同状语，第二个小句的骨干为 they could take reasonable measures，to ensure that phone data are not erased or altered while a warrant is pending 为意图状语，其间 that 引导宾语从 句，while 引导时刻状语从句。
【参阅译文】
面对严峻紧迫形势，他们仍然会使第四条修正案不具效能，他们会在等候法令授权的时刻内采纳合理办法来保证手机数据不会被删去或是更改。
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