動(dòng)詞 fortify:

1. make strong or stronger
   同義詞：strengthen, beef up
2. enclose by or as if by a fortification
   同義詞：fort
3. prepare oneself for a military confrontation
   同義詞：arm, build up, gird
4. add nutrients to
5. add alcohol to (beverages)
   同義詞：spike, lace

1. The medieval town is fortified with a high wall and a deep moat.
   這座中世紀(jì)的城市用高墻深溝來(lái)加強(qiáng)防御。
2. After praying quietly he faced his difficulties with a fortified spirit.
   默默地祈禱后，他面對(duì)困難的勇氣倍增。
3. Good eating habits help to fortify the body against disease.
   好的飲食習(xí)慣有助于強(qiáng)身防病。

for.ti.fy

v.（動(dòng)詞）
for.ti.fied,for.ti.fy.ing,for.ti.fies
v.tr.（及物動(dòng)詞）
To make strong, as:
鞏固，強(qiáng)化
To strengthen and secure (a position) with fortifications.
設(shè)防御工事，設(shè)防：以防御公事加強(qiáng)或防護(hù)（戰(zhàn)略位置）
To reinforce by adding material.
增強(qiáng)：加材料鞏固…的結(jié)構(gòu)
To impart physical strength or endurance to; invigorate.
使體力增加：通過(guò)增加營(yíng)養(yǎng)物恢復(fù)體力；使生氣勃勃
To give emotional, moral or mental strength to; encourage:
鼓勵(lì)：在情感、道德或精神方面增強(qiáng)；給…以勇氣：
例句：
Prayer fortified us during our crisis.
在關(guān)鍵時(shí)刻祈禱使我們變得堅(jiān)強(qiáng)

To strengthen or enrich (food, for example), as by adding vitamins.
增加營(yíng)養(yǎng)物：加入維生素強(qiáng)化食物等使之更有營(yíng)養(yǎng)
v.intr.（不及物動(dòng)詞）
To build fortifications.
構(gòu)筑防御工事

來(lái)源：
Middle English fortifien
中古英語(yǔ) fortifien
from Old French fortifier
源自 古法語(yǔ) fortifier
from Late Latin fortific3re
源自 后期拉丁語(yǔ) fortific3re
from Latin fortis [strong] * see bhergh- 2
源自 拉丁語(yǔ) fortis [強(qiáng)的] *參見(jiàn) bhergh- 2

【引伸】
for.tifi.able
adj.（形容詞）
for.tifi.er
n.（名詞）
for.tify.ingly
adv.（副詞）