To do something dangerous or risky.
做一些危险或冒险的事。
"You’re playing with fire if you invest without research."
"如果你在没有研究的情况下投资，你就是在玩火。"
a person who is unemotional or lacks warmth
a person actively involved in monitoring or controlling an a...
to remain composed and not panic
to betray someone for personal gain
it amazed or shocked me completely
to not tell others what someone has told you in confidence
