Occasional spotting around menstrual periods is usually trivial, but if it persists for two to three months, it is better to get checked up by a doctor.
他们缺乏建设性，破坏有余而建设不足，在参加革命以后，就又成为革命队伍中流寇主义和无政府思想的来源。
他們缺乏建設性，破壞有餘而建設不足，在參加革命以後，就又成為革命隊伍中流寇主義和無政府思想的來源。
tā men quē fá jiàn shè xìng ， pò huài yǒu yú ér jiàn shè bù zú ， zài cān jiā gé mìng yǐ hòu ， jiù yòu chéng wéi gé mìng duì wǔ zhōng liú kòu zhǔ yì hé wú zhèng fǔ sī xiǎng de lái yuán ．
These people lack constructive qualities and are given to destruction rather than construction; after joining the revolution, they become a source of roving-rebel and anarchist ideology in the revolutionary ranks.