其中维持最长时间的治疗方法是医生怀疑是由于持续的，潜伏的细菌感染，并由此开出长期或者无限期的抗生素药方。

For the longest time, doctors suspected that the condition was caused by persistent, hidden bacterial infections and sometimes prescribed long-term or open-ended antibiotic therapy.

youdao

程序的一部分设计来作长期潜伏，然后给机器加速，使离心机旋转装置产生振动自毁。

One part of the program is designed to lie dormant for long periods, then speed up the machines so that the spinning rotors in the centrifuges wobble and then destroy themselves.

youdao

根据美国法庭文件的记载，这十名嫌疑 人被指为“非法人士”，长期执行俄罗斯对外情报局的潜伏任务。

U.S. court papers describe 10 people arrested Sunday as "illegals" carrying out long-term, deep cover assignments in the United States for the Russian foreign intelligence service, SVR.

youdao