seal意为海豹时，读音为[siːl]。seal可作名词和动词，作为名词时，中文含义有“印章”、“图章”、“印记”、“保证”、“信物”、“密封垫”以及“海豹”；作为动词时，中文含义有“封上”、“密封”、“封盖…的表面”。
seal的基本释义及用法介绍
一、当seal作为名词时，意思有印章;图章;玺;印记;表示确认的事物;保证;信物;密封垫(或带等)；海豹。例句有：
1、The letter bore the president's seal.
信上盖有总统的印章。
2、I looked upon the gift as a seal on our friendship.
我把你的礼物看作我们之间友谊的见证。
3、Only drink bottled water and check the seal isn't broken.
只喝瓶装水，并且要看封口开了没有。
4、He broke the wax seal and unrolled the paper.
他揭去封蜡，把纸卷展开。
5、The rubber seal be designed to keep out all the moisture
橡胶的密封垫是用以隔绝湿气的。
6、I'll try to expand the impression, compare it to other seals.
我试着扩展这些图像，和其他图章对比。
7、A baby harp seal rests on the arctic ice .
一只格陵兰小海豹趴在北极区冰面上。
二、当seal作为动词时，意思有封上(信封);密封(容器);封盖…的表面。例句有：
1、Make sure you've signed the cheque before sealing the envelope.
一定要在支票上签了名再封信封。
2、The organs are kept in sealed plastic bags.
这些器官保存在密封塑料袋里。
3、The floors had been stripped and sealed with varnish.
地板上东西挪空，涂上了清漆。
4、They drank a glass of wine to seal their new friendship.
他们干了一杯，交成朋友。
5、Troops have sealed the borders between the countries.
军队已关闭了两国边界。
