/kən'vɪkʃn; kən`vɪkʃən/
n
1 ~ (for sth)
(a) [U] the convicting of a person for a crime 定罪; 科刑
*an offence which carries, on conviction, a sentence of not more than five years' imprisonment 定罪後可判处五年以下监禁的罪行.
(b) [C] instance of this 定罪
*She has six convictions for theft. 她有六次因盗窃而被判刑.
2 [U, C] ~ (that...) firm opinion or belief 坚定的看法或信仰
*It's my conviction (ie I firmly believe) that complacency is at the root of our troubles. 我深信自满情绪是我们各种问题的根源.
* Do you always act in accordance with your convictions? 你是否一贯地本着你的信念行事?
3 [U] believable quality 可信性
*She'd made such promises before, and they lacked conviction/didn't carry much conviction. 她以前也作过这样的许诺, 但都不足信.
4 (idm 习语) be open to conviction => open1. have/lack the courage of one's convictions => courage.

n
[C]
a very strong belief or opinion
religious/political etc convictions
　a woman of strong political convictions
deep/strong conviction
　The Dotens have a deep conviction that marriage is for life.
conviction that
　The students possess the conviction that they can make a difference to their community.
[U]
the feeling of being sure about something and having no doubts
with/without conviction
　He was able to say with conviction that he had changed.
　'No,' she said, without conviction.
　It was a reasonable explanation, but his voice lacked conviction .
　It took her so much effort to speak that what she said carried great conviction (=showed she felt sure of what she said) .
[U and C]
a decision in a court of law that someone is guilty of a crime, or the process of proving that someone is guilty
≠ acquittal
　They had no previous convictions.
　Applicants are checked for criminal convictions.
conviction for
　This was her third conviction for theft.
　the trial and conviction of Jimmy Malone
→have the courage of your convictionsatcourage