Simone
be certain：不确信；确定；肯前樱定例句：搜世1.Do not ask me to attack, it would be certain death, and you know it.不要让我进攻，你很明白这是自杀。2.If you're going to make a Digg script, you better be certain it's not blatantlyeasy to detect.如果你想做一个Digg脚本，你最好确定世悔肢它不会公然的容易被检测到。3.According to the different field you are engaged in, you may be certain stagesof the project progress at a certain stage or to get help.依据您从事的不同专业领域，您可能会在项目进展的某些阶段或者某个阶段需要得到帮助。
