inroad

• n. 侵袭，袭击；减少

in-,进入，使，road,古义，骑马，侵袭，词源同ride,raid.其原义为恶意入侵，侵扰，后词义褒义化指进展。

inroad (n.)

1540s, "hostile incursion, raid, foray," from in- (2) "in;" second element is road in the obsolete sense of "riding;" related to raid. Related: Inroads.

1. This deal is their first major inroad into the American market.

这交易是他们进军美国市场的首次重大收获。

来自《权威词典》