公章的英文：
official seal

参考例句：

Please fill out the tax cancellation return form with your company's stamp.
请填写注销税务登记表并加盖公章。

The official stamp is on the desk.
公章在书桌上。

Bank Stamp
银行公章

Affix official stamp or seal here
请在此处盖公章

Please stamp here with the official seal of your company.
请在此处盖上公司的公章。

The seal was in Chinese and was used locally.
公章是中文的,只在当地有效。

Please fill out the application form and stamp with your company seal.
请填写这份开票申请，并加盖公章。

Each of the copies of the above-mentioned materials shall be affixed with the seal of the import entity.
上述各类复印件应当加盖进口单位公章。

official是什么意思：
n. 官员，行政人员；裁判员，执法人
adj. 官方的，法定的，正式的；公务的，公职的；冠冕堂皇的；官员的

Babbitt was an official delegate.
巴比特是一名正式代表。

He is an important official in the government.
他是政府的要员。

It is a scandal for officials to take bribes.
政府官员接受贿赂是可耻的事。

The official reception will be held on Tuesday.
官方招待会将于周二举行。

As officials of the town, this was definitely their business.
他们既然是这个城镇的官员，这当然是他们的职责所在。

seal是什么意思：
n. 海豹；图案，印章；封印；保证，誓约；标志，象征
v. 保证；密封；确定；盖章；密封

A stamp or seal meant to be impressed.
图章用来盖戳的图章或印章

The experience seals their friendship.
这一经历确定了他们的友谊。

Sealing is prohibited in many countries.
许多国家禁止捕海豹。

The probe unit is hermetically sealed.
探头装置是密封的。

It was stored in a tube with a break seal.
它保存在一个有断裂密封垫的试管里。