incident

【1】事故

【例】We assure you that we will do all we can to see that such an incident will not happen again.我们保证，我们要尽一切可能注意避免这类事故的再次发生。

【2】易发生的，随带的

接用介词to。

【例】The English understand by “marine risks” only risks incident to transport by sea.

英国人对“水险”的理解，仅限于海洋运输有关的风险。

incidental

【1】易发生的，附带的

①【例】Seller will not in any event be liable for incidental or consequential damages.

卖方对附带的或随后产生的破损概不负责。

②接用介词to。

【例】Losses incidental to delay in shipment might be serious.

延迟装运带来的损失可能很严重。

【2】偶然的，临时的

【例】We will bear the freight and incidental expenses for the replacement.

我方愿负担换货的运费和杂费。

incidentally

顺便提到

【例】Incidentally, we are now in a position to accept a repeat order for shipment in October.

顺便告知，我方现在能够接受同样一笔订货，10月交货。