search box       
noun [ C ] uk/ˈsɜːtʃ ˌbɒks/ us/ˈsɝːtʃ ˌbɑːks/ (also search bar, /ˈsɜːtʃ ˌbɑːr/ /ˈsɝːtʃ ˌbɑːr/ search field, /ˈsɜːtʃ ˌfiːld/ /ˈsɝːtʃ ˌfiːld/)
 搜索框,搜索栏
a space on a computer screen or web page where you type a word or piece of information that you want to find
  Her website now includes a search box. 她的网站现在包含了一个搜索框。 
 Type your question into the search bar and press Go. 在搜索栏中输入你的问题,然后按Go。 
 He put the product number in the search field on the company's website. 他把产品编号放入公司网站的搜索栏里。 
 - More examples
 - Copying and pasting the e-mail address of a complainer into the search box will provide a list of other comments the same person has posted on various sites.
 - If you don't know the publication's URL, type the name into the Google search box.
 - If you are looking for UK-based information, select the "Pages from the UK" button below the search bar.
 - Typing "World Cup" into Google's search bar throws up a few surprises.
 - When you enter text in an e-mail, instant message or Google search field, the software tries to come up with the next letter.