1. V-T/V-I If you descend or if you descend a staircase, you move downward from a higher to a lower level. 下 (樓梯等); 下來(lái)[正式]

Things are cooler and more damp as we descend to the cellar. 我們往地窖中下得越深，里面就越冷、越潮濕。

2. V-I If a large group of people arrive to see you, especially if their visit is unexpected or causes you a lot of work, you can say that they have descended on you. 突然到訪

Some 3,000 city officials will descend on Capitol Hill on Tuesday to lobby for more money. 大約三千名市政官員將于周二突訪美國(guó)國(guó)會(huì)山，為爭(zhēng)取更多經(jīng)費(fèi)游說(shuō)。

3. V-I When you want to emphasize that the situation that someone is entering is very bad, you can say that they are descending into that situation. 陷入[強(qiáng)調(diào)]

He was ultimately overthrown and the country descended into chaos. 他最終被推翻，國(guó)家陷入了混亂。

4. V-I If you say that someone descends to behaviour which you consider unacceptable, you are expressing your disapproval of the fact that they do it. 墮落[表不滿]

We're not going to descend to such methods. 我們不會(huì)墮落到使用這些方式的份上。