名词

电话商务

在餐厅

1. (对不知其姓名的男士或上级的尊称)先生，长官
People sometimes say sir as a very formal and polite way of addressing a man whose name they do not know or a man of superior rank. For example, a shop assistant might address a male customer as sir .

2. (用于爵士或准男爵的姓名前)爵士
Sir is the title used in front of the name of a knight or baronet.

3. (正式信函或商务信函开头的称呼语)先生，阁下(写信给某组织时使用 Dear sirs)
You use the expression Dear sir at the beginning of a formal letter or a business letter when you are writing to a man. You use Dear sirs when you are writing to an organization.

1. term of address for a man