Open system interconnection layer

open ['opən]

adj. 敞开的，开着的;公开的，公共的;坦率的;有议论余地的; vt.& vi. （打）开;开始;睁开;启动; n. 户外，野外;空旷;公开; vi. 使打开;展示，显现; vt. 张开;开放;开张营业;为（建筑物）揭幕;

system ['sɪstəm]

n. 体系，系统;制度;身体;方法;

sy(syn-=together)+ste(to stand)→系统；体系；秩序；制度；方法

interconnection

n. 互相连络\\n[计] 互连

layer ['leiə]

n. 层，层次;膜;[植]压条;放置者，计划者; vt. 把…分层堆放;借助压条法;生根繁殖;将（头发）剪成不同层次; vi. 形成或分成层次;[植]通过压条法而生根;

Mrs. Ellen Stewart has taken an early lead.

Ellen Stewart太太初步领先。

A joke never gains an enemy but often loses a friend.

开玩笑总不能化敌为友，反而有时会失去朋友。

OK, everyone. Less noise, please! Gather round and listen carefully. First we are going to search the beach and the rock pools. Let me remind you what we are looking for: seaweeds, fish, plants, all living things. When you find anything, make a note where

00在这里集合，游泳之后再吃午餐。别着急！我们有足够的时间。