弩为何禁止空放：中英文双语阅读

中文段落

弩，作为一种古老的远程武器，以其独特的结构和发射方式在古代战争中占据了重要地位。然而，对于弩的使用，存在一个严格的规则，那就是禁止空放。那么，弩为什么不允许空放呢？

首先，从机械原理来看，弩的构造精密，其弦和弓臂经过精心设计，以承受发射箭矢时的巨大张力。空放意味着没有箭矢的情况下拉动弦并释放，这样做会对弩的机械结构造成严重的损害。没有箭矢的缓冲，弦和弓臂会受到过度的冲击，导致形变、开裂甚至断裂。

其次，从安全角度来看，空放弩也存在着极大的风险。在弦被突然释放时，由于没有箭矢的引导，能量会无序地散逸，可能伤及使用者或附近的人。此外，突然的能量释放也可能对弩本身的结构造成不稳定的影响，进一步增加使用风险。

因此，为了保证弩的正常使用和安全性，必须严格禁止空放。这既是对弩的维护，也是对使用者的保护。在享受弩带来的射击乐趣时，我们必须遵守这一规则，以确保自身的安全和弩的完好。

英文段落

The crossbow, an ancient long-range weapon, occupied an important position in ancient warfare due to its unique structure and firing method. However, there is a strict rule regarding the use of the crossbow: it is forbidden to dry fire. So, why is it not allowed to dry fire a crossbow?

Firstly, from the perspective of mechanical principles, the crossbow is constructed with precision, and its strings and bow limbs are carefully designed to withstand the tremendous tension generated during the launch of an arrow. Dry firing, which means pulling the string and releasing it without an arrow, can cause serious damage to the mechanical structure of the crossbow. Without the buffering effect of an arrow, the string and bow limbs will be subjected to excessive impact, leading to deformation, cracking, or even breakage.

Secondly, from a safety perspective, dry firing a crossbow also poses significant risks. When the string is suddenly released without an arrow to guide the energy, it can disperse chaotically, potentially injuring the user or nearby individuals. Furthermore, the sudden release of energy can also destabilize the structure of the crossbow itself, further increasing the risk of usage.

Therefore, to ensure the proper use and safety of the crossbow, dry firing must be strictly prohibited. This is not only for the maintenance of the crossbow but also for the protection of the user. When enjoying the shooting pleasure brought by the crossbow, we must adhere to this rule to ensure our own safety and the integrity of the crossbow.