Our clinic's new anesthetic spray arrived by express shipping this morning, ahead of schedule.

我們診所的新款麻醉噴劑今天早上以快遞送達，比預定時間還早。

Please email the supplier to confirm the price of the anesthetic gel before Friday.

請在星期五前寫電子郵件向供應商確認麻醉凝膠的價格。

The dentist explained that the anesthetic effect usually wears off within two hours.

牙醫解釋說，麻醉效果通常會在兩小時內消退。