Active current

active ['æktiv]

adj. 积极的，活跃的，有生气的;迅速的，敏捷的;有效的，起作用的; n. [语法]主动语态;积极分子，活跃的人;

current ['kɝənt]

adj. 现在的;最近的;流行的;流传的; n. 趋势;电流;水流;涌流;

curr跑，发生+ent具有...性质的→跑的→流动的

What's it for?

是做什么用的？

I know the boy whose father is a policeman.

我知道那个男孩的父亲是警察。

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。