1.roll back （使）滾回，（使）卷起來；使退卻，使后退；（政府）把（物價、生活費用等）壓低到原來的水平，使回降

例句：They rolled back the carpet and had a dance.

他們把地毯卷起，跳起舞來。

2.roll in the aisles （使）捧腹大笑

例句：I am tired of seeing action movies. I just want something that willmake me roll in the aisles.

我對動作片已經厭倦了，只想看一些能讓我捧腹大笑的電影。

3.roll over 從（邊）上滾下；翻轉，側轉，（使）翻滾

例句：They baby rolled over the edge of the bed and fell down.

嬰兒滾過床邊掉了下來。

4.roll up one’s sleeves 卷起袖子（準備打架）

例句：One could no more do that than one could roll up one's sleeves andgo down into the muck.

一個人不能那樣做，就如同不能卷起袖子下到污泥里去一樣。

5.roller skate 穿四輪溜冰鞋滑行

例句：A boy of about ten came up on roller skates.

一個大約十歲的男孩穿著雙排四輪旱冰鞋滑了過來。

6.room and board 膳宿

例句：Participants receive free room and board while they are in theacademy.

參加者在這家學院時，他們得到了免費食宿。