?pupils是一個英文單詞，它的意思是“學生”或者“瞳孔”。下面將會對這兩個意思進行詳細的解釋，并提供相關的用法和例句。

1. “學生”的意思

作為名詞，“學生”指的是在學?；蚱渌逃邮芙逃娜恕Ｋ梢杂脕碇感W、中學、大學以及其他各種類型的教育階段的學生。：

- The pupils in this school are very hardworking. (這所學校的學生非常勤奮。)

- The teacher gave the pupils a lot of homework. (老師給了學生們很多作業(yè)。)

此外，pupils也可以用來指某個特定年級或班級的學生群體，：

- The pupils in Grade 5 will have a field trip next week. (五年級的學生下周將進行一次郊游。)

- The teacher noticed that some pupils were struggling with the new material. (老師注意到一些同學在新材料上有困難。)

2. “瞳孔”的意思

作為名詞，“瞳孔”指眼睛中黑色部分，它是光線進入眼睛深處的開關，大小會隨著光線強弱而變化。：

- Her pupils dilated when she saw the bright light. (她看到強光時瞳孔放大了。)

- The doctor shone a light into my pupils to check my eyes. (醫(yī)生用燈光照射我的瞳孔來檢查我的眼睛。)

此外，pupils也可以用來指動物的眼睛中的黑色部分，：

- The cat's pupils narrowed as it stared at its prey. (貓盯著它的獵物時，瞳孔變窄了。)

- The dog's pupils widened when it saw its owner. (當它看到主人時，狗的瞳孔放大了。)

pupils作為“學生”和“瞳孔”的意思，在句子中可以根據(jù)上下文來判斷具體指代哪個意思。下面是一些例句：

- The teacher noticed that some pupils were struggling with the new material. (這里的pupils指的是學生。)

- The doctor shone a light into my pupils to check my eyes. (這里的pupils指的是瞳孔。)

例句參考1：

1. She has been a pupil in this school for 5 years.

2. The teacher asked the pupils to line up in two rows.

3. The pupils were excited about their upcoming field trip.

4. The doctor noticed that the patient's pupils were unequal in size.

5. The cat's pupils dilated as it saw a mouse running across the floor.

總結(jié)：

pupils有兩個意思，一個是“學生”，一個是“瞳孔”。作為“學生”，它可以指任何接受教育的人，也可以指某個特定年級或班級的學生群體。作為“瞳孔”，它指眼睛中的黑色部分，光線進入眼睛深處的開關。在句子中，根據(jù)上下文可以判斷具體指代哪個意思。希望本文能幫助你更好地理解和使用這個詞匯。