throw away their armor and trail their weapons behind them

a single spark can start a prairie fire - cuò huǒ liǎo yuán

have nothing to do - wú suǒ shì shì

Listen and feel - ěr tīng xīn shòu

Clear the source - duān běn chéng yuán

be on the upgrade - zhēng zhēng rì shàng

strike out in a new line - chěng yī jiān yán

Black and white - bái hēi bù fēn

Double gauge - dié jǔ chóng guī

exhaust all resources to build up one 's military power - wán bīng dú wǔ

be triggered at any moment - yī chù jí fā