ロングセラーだったら
ronguserādattara
1. If it were a bestseller; If it had been a bestseller
★ Common
Noun
#1458190
1. If it were a bestseller; If it had been a bestseller
1. if it's the case
1. long
1. seller
2. cellar
1. not be found
1. bestseller
1. million
2. million seller
1. interactive
1. drop-by-drop; dripping
2. incessantly (esp. speaking, e.g. complaints, compliments); in great profusion
3. sluggishly; dawdling