Tinder came out of iac 's research and development arm . "

Tinder来自于IAC公司的研发部门。

Gm ventures , the corporation 's investment arm , is a financial backer .

该公司的投资部门通用汽车风险投资公司（GMVenture）为其提供资金帮助。

Guillermo put his arm around her shoulder .

吉尔勒莫伸开胳膊搂住她的肩膀。

I kept my arm straight all the time .

我的手臂一直举得直直的。

Show me your arm . This is my arm .

展示你的臂.这是我的臂.