to give evidence in court against someone
在法庭上对某人提供证据 (zai fating shang dui mou ren tigong zhengju)
"The witness agreed to testify against the accused."
"证人同意作证反对被告。" (Zhengren tongyi zuozheng fandui beigao.)
to stay calm and not lose control under stress
to gradually become deeply involved in a negative emotion
to recover emotionally or professionally after failure
to try hard not to cry
to blend gradually with surroundings; become less noticeable
to develop something gradually to reach a goal