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以前好像可以，我填了，寄給他們（？）。已經好多年沒做過這個了，都不記得了。現在還可以嗎？
-Yes.

有最近幫父母申請簽證的嗎？

是填了網上submit

-Submit it. Read the following websites carefully for the procedure including how to pay the fee, etc.:
http://www.ustraveldocs.com/cn_zh/cn-niv-typeb1b2.asp
http://www.ustraveldocs.com/cn_zh/cn-niv-passporttrack.asp
 
還是寄給父母打印件？
-You need to print out the 預約單打印件、DS-160確認頁打印件 and then, send these pages to your parents.