The latch needle, developed in the mid 1800s, is so named because it can be closed using a latch which is activated without any special assistance during the knitting process.

• 舌针是在19世纪中期发明的,之所以称为舌针,是因为在针织过程中,不需要任何特殊的帮助便可使针舌开启或闭合。