fly-by-night

adj.

短暂的，非持久的性的，一时的；不可信任的；

1. Temporary silence was broken by a new clerk sitting in the corner.
   角落里坐着的新职员打破了暂时的安静。
2. The prosperity called by them is just a temporal phenomenon.
   他们所谓的繁荣只是一个暂时的现象。

Fly by Night
Fly by night
Fly by Night
"Fly-by-Night"Firms and the Market for Product Reviews
Secured Credit Cards Losing Fly-by-Night Image
‘Fly-by-night’ or here to stay?—The future for air express
FLY-BY-NIGHT BUILDERS IN HARBIN AND SHANGHAI
The Fly-by-Night Parrot
Winners, Losers and Fly-by-Nighters: Trade Policy with Risky Investment in Quality
Oh, These Fly-by-Night NRI Depositors
Fly-By-Night. Robert Siodmak (1942)
EARHART NAMESAKE'S JOURNEY NO FLY-BY-NIGHT AFFAIR
TWITTER AIMS TO TURN FLY-BY-NIGHTERS INTO USERS