英语单词查询
ravelin
「ravelin」的意思
n. 半月堡；三角堡
n.(城墙的)半月堡
「ravelin」的用法
ravelin一种中世纪的防御工事，通常由木桩和绳索构成，用于保护城堡或要塞。 - 军事历史
「ravelin」的例句
The castle was defended by a ravelin.
城堡被一个拉维尔防线所保护。
Historians study the ravelins used during the Hundred Years' War.
历史学家研究在百年战争中使用的拉维尔防线。
The defenders used a ravelin to confuse the attackers.
防守者使用拉维尔防线来迷惑攻击者。
The ravelin was an important part of medieval fortifications.
拉维尔防线是中世纪城堡防御的重要组成部分。
The attackers tried to breach the castle's defenses with a ravelin.
攻击者试图用拉维尔防线攻破城堡的防御。
The ravelin provided additional protection for the castle's main gate.
拉维尔防线为城堡的主要入口提供了额外的保护。
During the siege, the defenders constructed a ravelin to counter the attackers' tactics.
在围攻期间，防守者建造了一个拉维尔防线来对抗敌人的战术。
The attackers were unable to breach the castle's defenses with their ravelin.
攻击者无法用他们的拉维尔防线攻破城堡的防御。
The ravelin was an effective way to defend against certain types of attacks.
拉维尔防线是一种有效抵御某些类型攻击的方法。
The defenders used a series of ravels and other defensive structures to protect the castle.
防守者使用了一系列的拉维尔和其他防御结构来保护城堡。