to be giving testimony in court
在法庭上作证 (zai fa ting shang zuo zheng)
"The victim was nervous while on the witness stand."
"受害者在证人席上很紧张。" (shou hai zhe zai zheng ren xi shang hen jin zhang)
to waste time on a topic that has already been resolved
To begin a new project or initiative.
to accept things as they come; not resist change
to do something uncertain, trusting that it will succeed
lovers whose relationship is doomed or unlucky
to be extremely frightened