3 on the one hand/ intelligent machines/ have/ many benefits.
4 the use of robots/ can replace/ human workforce/ reduce/ the cost of production
5 a robot/ can/ replace/ many workers/ assembly lines/ such as/ packing/ lifting heavy things
6 in addition/ robots/ can/ not only/ complete tasks faster/ more precisely/ but also/ make fewer errors/ defects
Paragraph 2
7 on the other hand/ disadvantages/ use/ A.I robots/ obvious
8 first/ when/ attacked/ malware or viruses/ disabled/ power failure/ robots/ may lead/ misuse/ destruction/ the world
9 second/ there/ sometimes/ malfunctions/ due to/ computer system crashes/ hackers/ take control/ computers/ cause damage/ robots
Conclusion
10 in conclusion/ robots/ can substitute/ humans/ stressful/ dangerous work/ and/ advantages/ outweigh/ disadvantages