白杨保卫战是英雄们的壮举。

The defense of the alamo was a heroic action of gallant men.

这也阻挠了另一方发起婚姻保卫战。

It could also deter the other partner from fighting to save their marriage.

匊 摘要：南京保卫战是抗战初期一次重要的战役。

The Battle of Nanjing is an important battle in the early stage of Anti-Japanese War.

列宁格勒保卫战一直持续到冬季，此时该市的处境变得危急。

As the battle of Leningrad dragged on into winter, the city's situation became desperate.

1937年上海保卫战开始的时候，鉴于双方的武器装备的差别，一个日军陆军师的战斗力相当于中国国民革命军四个正规师的战斗力。

Each Japanese division was the equivalent in fighting strength of four Chinese regular divisions (at the beginning of Battle of Shanghai (1937)).