block character

例句：

1. 1. The programmer was able to block the character that caused the error.
   程序员能够阻止导致错误的字符。
2. 2. The software developer blocked the character that could cause a security breach.
   软件开发者阻止了可能导致安全漏洞的字符。
3. 3. The engineer used a block character to prevent the transmission of malicious code.
   工程师使用一个阻塞字符来防止恶意代码的传播。