yíng tū yuè / chū xiàn / zài / mǎn yuè / zhī qián / shì / guān cè / yuè miàn / xì jié / de / hǎo / shí jī盈凸月出现在满月之前,是观测月面细节的好时机。The waxing gibbous moon appears before the full moon and is a good time to observe lunar surface details.