Today, I got a warning from my boss.
When you’re reading in Japanese, pay attention to interesting words and grammar.
I’m worried that he’s going down the wrong path. I cautioned him, but he doesn’t listen to me.
When you pour your ideas into something, you're thinking a lot about it. You're paying close attention and using caution. You'll see this on a lot of signs marking dangerous things in Japan, so be sure to pay attention to them!
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.