astatic的音標為[?s"t?st?k]，基本翻譯為“無定形的；無組織的”，速記技巧為：a（無）+static（靜態的）→無定形的。

astatic的詞源：

詞根：a-（無，非） + static（靜止的） → 非靜止的 → a-static

詞綴：-ity（表示狀態或情況）

變化形式：a-static → astatic（無定形的）

相關單詞：

1. atlas - 希臘語，意為“指南”，因為它是希臘神話中負責馱負天空的動物，象征著指南和指導。

2. astatic - 意為“無定形的”，表示缺乏穩定性或固定性。

3. statue - 意為“雕像”，因為雕像通常是靜止不動的。

4. static - 意為“靜止的”，與詞根static相對應。

5. statistics - 意為“統計數據”，因為統計數據通常是不變的。

6. statist - 意為“統計學家”，與統計數據有關。

7. stately - 意為“莊嚴的”，因為莊嚴通常與靜止和穩定有關。

8. statigraphy - 意為“地形學”，因為地形通常是靜態的。

9. statuatory - 意為“模仿雕像的”，與雕像有關。

10. statism - 意為“國家主義”，與國家有關，強調穩定和秩序。

常用短語：

1. at will 隨意地

例句：He has free access to the library at will.

2. at a time 一次

例句：She took a sip of coffee at a time.

3. at intervals 不時地

例句：The children play football at intervals throughout the afternoon.

4. at the same time 同時

例句：I watch TV at the same time as I do my homework.

5. out of the blue 突然

例句：He received a phone call out of the blue from his old friend.

6. on the spur of the moment 立刻

例句：I decided on the spur of the moment to go for a walk.

7. under the weather 身體不適

例句：He was feeling under the weather and stayed in bed all day.

英文小作文：

When I was young, I often played with my friends in the park. We would run around and have fun, but sometimes we would get tired and need a break. One day, we decided to sit under a tree and rest. It was a beautiful day and we could see the sky and the clouds moving slowly above us. We were all feeling a little out of sorts, but it was nice to just sit and relax for a while. We could hear birds singing and see butterflies fluttering around us. It was a perfect moment and I will always remember it.

以上短語中，“at will”和“on the spur of the moment”在作文中都有出現，前者表示隨意，后者表示立刻，都表達了人們在特定情況下的自由和沖動。同時，“out of the blue”和“under the weather”這兩個短語也出現在作文中，前者表示出乎意料，后者表示身體不適，都為作文增添了色彩和深度。