1. Are the tomatoes firm and ready to be harvested?2. He loves to show off his firm muscles in front of the ladies.3. "Your chest is so solid," said the wife.4. The harness for rock climbing seems to be secure. I think I can do it. Let's do some rock climbing!
 firm solid strong secure這些字都有結實的意思。
老師 (讓小朋友出校車後): 別嬉戲，別跟陌生人說話。 (請填空)
Teacher (after letting kids out of the school bus on a field trip): No horsepay. Don't talk to strangers.