confine within doors 不得出家门
confine within the problem 以这个问题为限
Bash is also ideal for secure environments, having a restricted start mode that can confine a user's ability within the shell to a brief, determinable list of commands.
bash还非常适合于安全性要求高的环境，它具有受限制的启动模式，可以把shell中的用户限制为只能执行一组确定的命令。
Through the detection of the stator current, the control can confine the starting current within the allowable range.
控制器通过监测电机定子电流的大小，将其起动电流控制在允许的范围内。
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