⇒ 由于司机一时不慎，发生了一起重大交通事故。 (Yóuyú sījī yīshí bù shèn, fāshēngle yī qǐ zhòngdà jiāotōng shìgù.) As a result of the driver's momentary carelessness, there was a serious accident.
⇒ 由于不用功，他没能通过考试。 (Yóuyú bù yònggōng, tā méi néng tōngguò kǎoshì.) Because he didn't work hard, he couldn't pass the exam.