"Attire during internship:
Please be dressed in comfortable working attire. Jeans, sneakers and sandals are not allowed. Ties are not necessary for gentlemen.” 具体指的是不是就是 衬衣，西裤加皮鞋？(i'm male)

另外，衬衣是穿短袖好，还是长袖比较得体？

谢谢答疑

the dressing code really depends on the organization you are working in. think if no one wearing shirts in your company, how strange you will looks like if you wear. Generally, if you dun know what to wear on the first day, you can either a shirt without tie(under dress is better than over dress). then watch around, see how everyone dress. then you will have the answer. Better not wearing short sleeve shirt. very strange, if you want to wear short sleeve, consider polo T-shirt.

one thing to mention, polo T-shirt is not T-shirt. anything has collar will not consider a T-shirt.

:) have a good IA