Primary structure

primary ['praɪmɛri]

adj. 首要的，主要的;最早的，原始的;[地质学]原生的;基本的; n. 第一位;最好者;要素;候选人提拔会;

prim第一，主要的+ary形容词后缀 → 第一的，最开始的 → 最初的；根本的

structure ['strʌktʃɚ]

n. 结构;构造;建筑物;体系; vt. 构成，排列;安排;

struct建立+ure表名词 → 构造；结构

Good morning, sit down please.

早安，请坐。

We trust that you will quote us your most favorable price for big quantities.

相信由于我方大量订购贵方能报最优惠价格。

We set off down the hill. At first it was easy walking over the grass. Then the grass turned to bushes and the hillside became steeper. We climbed over rocks, through trees and found it more and more difficult to get down the hill. By now we were beginnin

我们开始下山，起初很容易地走过草地，后来草地变成了灌木丛，山峰变得更陡了。我们爬过岩石，穿过树林，发现下山越来越难。这时我们感到疲惫，雨也下大了。我在一小块草地上停下来，转身看看跟在我后面的弟弟。就在这时我在两块岩石中间发现了一个洞。“我过去看看，”我喊?2282