?一：under-the-counter是指非法或不公開的交易或活動，通常指在法律規(guī)定的范圍之外進行的交易或活動。

用法：這個短語通常作為形容詞使用，修飾名詞，表示某種交易或活動是非法或不公開的。

例句：

1. The store owner was arrested for selling under-the-counter goods.

（這位店主因為銷售非法商品而被捕。）

2. The company was accused of under-the-counter dealings with foreign investors.

（這家公司被指控與外國投資者進行非法交易。）

3. The politician was involved in under-the-counter activities to fund his campaign.

（這位家參與了非法活動來籌集競選資金。）

4. The black market is known for its under-the-counter transactions.

（黑市以其非法交易聞名。）

5. Many people are willing to pay extra for under-the-counter products because they are hard to find.

（許多人愿意為非法產(chǎn)品支付額外費用，因為它們很難找到。）

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三：用法：under-the-counter通常用于描述一些違反規(guī)定、不公開的交易或活動，包括但不限于販賣假貨、、等。

四：例句1-5句且中英對照：

1. The company was fined for engaging in under-the-counter activities.

（這家公司因為從事非法活動而被罰款。）

2. The government has been cracking down on under-the-counter dealings in the country.

（一直在打擊該國的非法交易。）

3. The police discovered a large amount of under-the-counter money during the raid.

（在突擊搜查中了大量的非法資金。）

4. He was arrested for trying to sell under-the-counter drugs to high school students.

（他因為試圖向高中生販賣非法藥物而被逮捕。）

5. The politician's hidden wealth was a result of his under-the-counter dealings with foreign investors.

（這位家的隱秘財富是與外國投資者進行非法交易的結果。）

五：同義詞及用法：under-the-table、black market、illegal、unlawful等都可以用來表示非法或不公開的交易或活動。

六：編輯總結：under-the-counter是一個常用于描述違反規(guī)定、不公開的交易或活動的形容詞，它通常帶有負面含義，指涉一些違反道德和法律規(guī)定的行為。在使用時需要注意語境，避免誤解。