at arm's Customers and suppliers must be dealt with fairly and at arm’s length.前半句懂,请详细解释后半句意思,整句意思我懂，是强调平等交易。但是我想知道的更确切，为什么要用at arm's length来加以强调

at arm's Customers and suppliers must be dealt with fairly and at arm’s length.前半句懂,请详细解释后半句意思,整句意思我懂，是强调平等交易。但是我想知道的更确切，为什么要用at arm's length来加以强调 请翻译:at arm's length keep at arm's length是什么意思 you can keep him at ________length.A.neck's B.foot's C.leg's D.arm's 英语翻译顺便翻译一下at arm's length keep him at arm's length,as he isa guy being lacking____honesty.A.ofB.onC.inD.about It's a such nice place,Father said as he sat at the table____B___for customers.A.to be reserved B.reserved为什么选A不对 how to introduce a company's newsletter to your customers? “It’s such a nice place,”Monther said as she sat at the table（reserved）for customers.为什么括号里用这个, “It’s such a nice place,”Monther said as she sat at the table（reserved）for customers.为什么括号里用这个, 求英语翻译 Here it is. This is my arm. Let's play a game. Where is your bag? Look at my head. Company A should not solicite any of B's customers(including actively sought prospective customers)不明白什么是actively sought prospective customers Look at my arm.是什么意思? 1.Jim's brother's age is two third of Jim's age,and Jim's sister's age is three fourths move than Jim's.We know Jim's brother's age is 8,how old is Jim's sister?2.A shop opens at 10:00 am and closes at 6:00 pm.About 100 customers enter into this shop 请问arm's length funds break ones arm是什么意思? ues one’s arm well 请教hold one's arm