Alphanumeric code

alphanumeric [,ælfənju:'merik,-kəl]

adj. 文字数字的，包括文字与数字的;

code [kəud]

n. 行为准则;代码，密码;法典;信号; vt. 将…译成电码;编码，加密; vi. 为…编码;指定遗传密码;

You're a big boy.

你是个大孩子了。

Sadness and gladness succeed each other.

悲喜互继，哀乐相续。

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。