1. Only 30 print copies of this book have been released to the market.2. This book is limited to 100 print copies.3. See this cool, precious T-shirt? We have limited its production volume to only one hundred. Buy them now!4. This iPhone is the limited edition. Only one hundred are available. Buy them now!
 only is limited例句的意思是這本書限量30本。a limited edition book = 一本限量的書，通常發行量少於一千本
I have been wrecking my brai on this tough math question but I still cannot solve it.