under control

副词 under control:

1. unable to act freely
   同义词：in check, in restraint

1. Gas flowing through the pipes burns instantly but can be kept under control easily by opening or closing the pipes.
   通过管子的煤气会瞬间燃烧起来，但我们凭开、关管道很容易控制它。
2. You must get your spending under control.
   你必须节制开支。
3. The fire has been brought under control.
   火势已受到控制。
4. Is everything under control?
   一切都在掌握之中吗？