天然气阀门什么牌子好:"I'm is on my last legs "的汉语意思是什么

"I'm is on my last legs "的汉语意思是什么 "I'm on to you"是什么意思? I'm on a roll today \\"If I have chips in my pantry, I'm going to snack on them at what is the meaning of "I'm not telling" and "Let's back up"? "I'm still learning about all of the wonderful new features on this BBS"什么意思？ I'm on your side 的汉语意思 i'm holding on forever是什么意思啊 I'm going out on a limb, 怎么翻译 I'm leaning on the everlasting arms