on loan to 贷款给;借给;暂借给...

【例句】
In many such stocks, about 20% to 40% of the market capitalization is already out on loan to short sellers.
在很多这类股票当中，占各自公司市值20%到40%的股票都已经被借给了空头。

He's on loan to the travel service.
他借调到旅行社去工作了。