Sodium citrate thorium

sodium ['sodɪəm]

n. <化>钠(11号元素，符号 Na);

citrate

n. 柠檬酸盐\\n[化] 柠檬酸(或枸橼酸)盐(酯或根)

thorium

n. 钍\\n[化] 钍Th

I miss them very much.

我非常想他们。

What on earth has happened to trouble you so?

到底发生什么事让您如此发愁？

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。