roll

Compared meaning: an official list of names (noun).

比较义项：名单，尤指正式登记的人员名单（名词）。

• roll 本词

  Roll refers to an official list of names, often used to check attendance or membership; it does not by itself show duties or schedule. Common in 'roll call' or 'class roll'.

  roll指正式登记的姓名清单，常用于点名或核实成员身份，本身并不说明职责或班次安排，常见搭配如“roll call”（点名）、“class roll”（班级名册）。

  The teacher takes roll every morning to see who is absent.

  老师每天早上点名，看看谁缺席了。

• roster

  Roster refers to a list of people organized by duty, shift, or turn, showing who is assigned to what and when; common in workplaces and sports teams.

  roster指按职责、班次或轮值编排的人员名单，说明谁被指派做什么、什么时候做，常见于工作场所和运动队，如“duty roster”（值班表）、“team roster”（队员名单）。

  The manager posted the new roster showing everyone's shifts for the week.

  经理张贴了新的排班表，标明了每个人这周的班次。

Roll and roster both name a list of people. Roll is a formal list of names, used to check who is present or who is a member. Roster is a list showing people's duties, shifts, or turns — who does what, and when.

roll和roster都指人员名单，但语气和用途不同：roll多指正式登记的姓名清单，常用于点名或核实成员身份；roster则强调按职责、班次或轮值编排的人员名单，突出“谁、何时、做什么”。这里不比较roll表示“滚动”或“面包卷”等其他意思。

Compared meaning: a small piece of bread (noun).

比较义项：小圆面包（名词）。

• roll 本词

  A general term for any small individual bread portion, often served plain alongside a meal (a dinner roll); can be savory, and its shape is not always perfectly round.

  泛指用餐时搭配的独立小面包，常见于正餐（如 dinner roll），口味多为咸味，形状也不一定是标准的圆形。

  The waiter placed a warm roll beside each dinner plate.

  服务员在每个餐盘旁边放了一个温热的小面包。

• bun

  A soft, round bread piece, often slightly sweet, most typically used to hold a burger or hot dog filling rather than eaten on its own with a meal.

  质地柔软、形状浑圆的小面包，口味常带一点甜味，最典型的用途是夹住汉堡肉饼或热狗，而不是单独作为正餐配食。

  She slid the grilled patty onto a soft bun.

  她把烤好的肉饼放进一个松软的小圆面包里。

Roll and bun both mean a small piece of bread. Roll is a general word for small bread, served with a meal. Bun is a soft, sweet, round bread used for a burger or hot dog. This does not compare roll meaning to turn.

roll 和 bun 都指西式餐桌上常见的独立小面包，但 roll 泛指各种小面包，常见于正餐配餐；bun 则特指质地柔软、略带甜味、最典型用于夹汉堡或热狗的小圆面包。这里不比较 roll 作动词表示“滚动”的义项。