保證金
margin call
[英][?mɑ:d?in k?:l][美][?mɑrdn k?l]
補充保證金通知，增收保證金，征收保證金的要求;
例句:
1.
Precisely because it is costly for a bank to raise equity in bad times, it is also politicallydifficult for a regulator to make a margin call.
究其原因，壹方面是因為銀行在不景氣時期籌集股本的成本過高；另壹方面是因為監管機構發出追加保證金通知目前在政治上難以實現。