Real variable

real ['ri:əl]

adj. 真的;真实的，现实的;事实上的;真诚的; adv. 真正，实在;确实地; n. 实在，现实;实数;

variable ['vɛrɪəbl]

adj. 变化的，可变的;[数]变量的;[生]变异的; n. 可变因素，变量;易变的东西;

vari=vary变化+able形容词后缀→易变的

Oh, please.

噢 太好了。

Know thyself.

知道你自己。

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。