graywacke

graywacke的音标为[ˈgreɪwækɪ]，基本翻译为“灰色页岩”。

速记技巧：gray（灰色）+ wacke（岩石）→灰色页岩。

Graywacke这个词来自英语，意思是“灰色页岩”。它的词源可以追溯到古英语中的“gray”（灰色）和“wæck”（页岩）。

变化形式：在词形上，graywacke有过去式和过去分词形式，分别为gray-wacked和graywacke。

相关单词：

graywacke → gray sandstone（灰色砂岩）

wacke → wacky（古怪滑稽的）

wack → 打桩（工程中）

wacky → 疯狂的，古怪的

wacky → 打桩声

wacky → 瓦肯礼帽（一种流行的时尚单品）

wackish → 有点疯狂的

wackishness → 疯狂状态

wacky-wacky → 疯狂滑稽的

总的来说，graywacke这个词在英语中具有丰富的含义和用法，它不仅代表了一种岩石类型，还衍生出了许多有趣的词汇和短语，表达了不同的情感和概念。

常用短语：

1. graywacke sandstone

2. graywacke formation

3. graywacke rock

4. graywacke layer

5. graywacke matrix

6. graywacke matrix stone

7. graywacke gravel

例句：

1. The graywacke sandstone is a common sedimentary rock in many regions.

2. The graywacke formation is a layer of sedimentary rocks that formed over millions of years.

3. The graywacke matrix stone is used for building and construction in many areas.

4. The graywacke gravel is a type of gravel that is commonly used for road construction.

英文小作文：

Graywacke is a common sedimentary rock that is found in many regions around the world. It is formed from layers of mud and sand that have been compressed over time by the weight of other rocks and sediment. Graywacke sandstone is a type of graywacke that is often used for building and construction because it is strong and durable. It can be used for foundations, walls, and other structures because it can withstand the wear and tear of weathering and erosion. Graywacke also has a unique texture that makes it visually appealing and adds to its aesthetic value. In addition to its practical uses, graywacke sandstone has also been used in art and sculpture because of its unique appearance and texture. Overall, graywacke is a versatile rock that can be used for both practical and aesthetic purposes.