Our website is under maintenance.
"repair"是“修理”的意思，"maintenance"才是“维修”的意思。
n.维护; 维修; 维持，保持; 保养，保管;
The window had been replaced last week during routine maintenance.
上周例行维修的时候换了窗户。
正确翻译：
Our website is currently under maintenance
不是"repair"，"repair"是“修【坏了的】东西”的意思，"maintenance"是“维修”的意思。
Our website is under repairment.
Our website is under maintenance
Our website be in maintenance
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