Controllable reaction

controllable

a. 可管理的, 能操纵的, 可控制的\\n[经] 可控制的

reaction [rɪ'ækʃən]

n. 反应;反作用力;反动;保守;

re向后，相反+act行动+ion名词后缀→反动，反应

These items shouldn't be difficult to come by

这些东西应该是不难弄到的，

Excuse me I couldn't write you sooner.

对不起我不能尽快给你写信。

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。