to start something energetically and successfully
精力充沛且成功地开始一件事 (jingli chongpei qie chenggong de kaishi yi jian shi)
"She joined the team and hit the ground running on her first day."
"她加入了团队，并在第一天就充满活力地投入工作。" (ta jiaru le tuandui bing zai diyitian jiu chongman huoli de touru gongzuo)
someone who exaggerates or overreacts to situations
to secure something tightly in preparation for trouble
to pay attention to small details or finalize things perfect...
to be very careful about what you say or do to avoid upsetti...
to relax your vigilance or become less careful
to move up in position or success, especially in a career
