Collins Chinese Dictionary Plus (3rd edition), 2011:
coast [kəust]
I n
[c]
海岸 hǎi'àn [个 gè]
II vi
1
[car, bicycle] 滑行 huáxíng
2 (in school, competition) 毫不费(費)力地进(進)行 háo bù fèilì de jìnxíng
- to coast to success/to a victory
轻(輕)松(鬆)取胜(勝) qīngsōng qǔshèng