appal的音標是[??pɑ?l]，基本意思是“使驚恐，使驚慌”，也可以表示“使失望，使沮喪”。速記技巧是利用字母的相似性來記憶這個單詞。例如，可以將“ap”看作是“螞蟻”，將“pa”看作是“蜘蛛”，這樣就可以將這個單詞與昆蟲聯系起來，方便記憶。

Appal這個詞的詞源可以追溯到拉丁語apparere，意為“出現”或“出現的樣子”。這個詞在英語中通常被用作動詞，表示“使驚奇”或“使驚訝”。

變化形式：在詞形上，appal這個單詞通常沒有明顯的變化形式。它是一個比較純粹的動詞，主要通過詞義的變化來表達不同的含義。

相關單詞：

astonish（使驚奇）：這個詞與appal有相似的含義，都表示使對方感到驚訝。它來自拉丁語的另一個動詞astu，意為“我驚奇”。

shock（震驚）：這個詞的含義與appal相似，都表示對某件事情感到震驚。它來自古英語中的另一個單詞sceacgan，意為“震驚”。

surprise（驚訝）：這個詞的含義與appal最為接近。它來自中世紀英語的surprize，意為“突然出現”。

awaken（喚醒）：這個詞的含義是使某人從睡眠中醒來。它來自古英語中的另一個單詞awen，意為“喚醒”。

alarm（驚恐）：這個詞的含義是使某人感到驚恐。它來自拉丁語的另一個單詞alarmum，意為“警報”。

以上這些單詞都與appal這個單詞有相似的含義，都表示使某人感到驚訝或驚恐。這些單詞在英語中都有廣泛的使用，并且可以用來描述各種不同的情境和情感。

常用短語：

1. appal the conscience

2. appal the world

3. appal oneself at the sight of

4. appal one"s heart

5. appal one"s soul

6. appal sb"s mind

7. appal sb"s judgment

例句：

1. The news appalled the conscience of the nation.

2. The sight of the burning building appalled me.

3. The thought of my mother being raped appalled my mind.

4. The news appalled my family and friends.

5. The fact that he had committed such a heinous crime appalled everyone.

6. The decision to close the factory appalled many workers.

7. The decision to appoint a stranger to the post appalled many people.

英文小作文：

Appal at the reality of climate change

In today"s world, we are facing a grave reality that is beyond our control - climate change. The increasingly severe weather patterns, rising sea levels, and dwindling natural resources are all a stark reminder of the impact that we are having on our planet. It is truly appalling to see how our actions are affecting the very life support system that we rely on for survival.

The impact of climate change is felt on every level - from individuals to entire nations. It is disheartening to see how some nations are being left behind while others profit from the misery of others. We must stand up and speak out against this injustice, and work towards a more sustainable future that is fair and equitable for all.

It is time to appal ourselves at the reality of climate change and take action to address it. Only then can we hope to leave a better world for future generations.