Definition of rolling

rollingadjective

lăn

/ˈrəʊlɪŋ//ˈrəʊlɪŋ/

The word "rolling" originates from the Old English word "hweorfan," meaning "to turn, revolve, or move in a circle." This word evolved into "hweorfan" and later "hweorfan," ultimately becoming "whirlen" and "wherlen" in Middle English. By the 14th century, the word had transformed into "whirlen" and "wherlen," which were then shortened to "wherl" and "wherle." Finally, "wherl" evolved into "whir," and eventually "roll" by the late 15th century. The word "rolling" is thus a combination of the ideas of "turning" and "moving in a circle," which perfectly describes the act of something moving along a surface while rotating.

namespace

having gentle slopes

có độ dốc thoải

done in regular stages or at regular intervals over a period of time

được thực hiện theo từng giai đoạn đều đặn hoặc đều đặn trong một khoảng thời gian

Example:
  • a rolling programme of reform

    một chương trình cải cách cuốn chiếu