这个项目包括十五个开发人员和测试人员，各自分成两个团队。
The project involves fifteen developers and testers, separated into two teams, respectively.
密度很重要，比如每五个词中有两个关键词比每十五个词中两个关键词要有效。
Density is important; i.e. 2 keywords for every 5 words counts more than 2 for every 15.
短短两个月内就有十八个整师、九个旅和十五个团被歼。
Eighteen full divisions, nine brigades and fifteen regiments within the space of two months were wiped out.
短短两个月内就有十八个整师、九个旅和十五个团被歼。
Eighteen full divisions, nine brigades and fifteen regiments within the space of two months were wiped out.
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