If you describe a feeling or physical action as uncontrollable, you mean that you cannot control it or prevent yourself from feeling or doing it.
It had been a time of almost uncontrollable excitement.
那是一个兴奋几乎难以抑制的时刻。
William was seized with uncontrollable rage.
威廉怒不可遏。
If you describe a person as uncontrollable, you mean that their behaviour is bad and that nobody can make them behave more sensibly.
Mark was withdrawn and uncontrollable.
马克性格孤僻,无法管束。
If you describe a situation or series of events as uncontrollable, you believe that nothing can be done to control them or to prevent things from getting worse.
If political problems are not resolved, the situation may become uncontrollable.
如果政治问题得不到解决,局势可能变得无法控制。