复数： fortifications

For one , fortification of the citadel is impossible ; for the other , it is unnecessary .

防御者一方面无法设防，另一方面也没有必要。

Nutritional fortification rice , rice flour and instant conjee .

营养强化大米、米粉及方便粥。

The mathematical models for earthquake security fortification investment .

地震安全性设防投资评估的数学模型。

Projecting part of a rampart or other fortification .

指城墙的突出部分或其他防御工事。

Thoughts on management fortification of research funds in institutions of higher learning .

关于强化高等学校科研经费管理的思考。