注釋：① deposite vt. 放置，存儲
例句：
1. I had to deposit 10% of the price of the house.
我必須先付房價的10%作定錢。
2. You may deposit your valuables in the hotel safe.
您可以將您的貴重物品放在旅館的保險柜里。

② flush n. 激動，洋溢；面紅；萌芽；旺盛；奔流
vt. 使齊平；發紅，使發亮；用水沖洗；使激動
vi. 發紅，臉紅；奔涌；被沖洗
adj. 大量的；齊平的；豐足的，洋溢的；揮霍的
例句：
1. She shows a flush of joy at his coming.
對他的到來她表現出一陣興奮。
2. Rivers flush with the spring rains.
因春雨而上漲的河水

③ assault n. 攻擊；襲擊
vt. 攻擊；襲擊
vi. 襲擊；動武
例句：
1. After the assault was successful, the last four guards had surrendered.
襲擊得手之后，最后四個衛兵投降了。
2. The commander decided to assault the enemy in the darkness.
指揮官決定夜襲敵軍。

句子講解：

1. They spewed out thick clouds of hot air, ash and volcanic rock which settled on the ground.

【結構簡析】句中的"which"從句是一個定語從句，修飾前面的volcanic rock。

【參考譯文】火山噴射出的熱空氣、火山灰散布在空氣中還有地面上厚厚一層的火山巖。

2. This also confirmed the theory geologists had about the formation of Wind River Canyon, the incredible amount of infield buried the Owl Creek Mountains.

【結構簡析】"geologists had about the formation of Wind River Canyon"在句中用來說明"theory" ,省略了關系詞"that"，"buried"過去分詞來修飾"infield"。

【參考譯文】這也證實了地質學家關于形成風河峽谷的猜想，大量的耕地埋葬了貓頭鷹溪山脈，這個數量令人難以置信。