They hold only one piece of data: a string, a number, the undefined value, a reference to another variable.

它只保存一段数据：一个字符串、一个数字、未定义的值以及对另一个变量的引用。

youdao

The sole flapped off one boot, and he tied it to the upper with a piece of string from his pack.

一只靴的底脱落了，他只好从背囊上扯下一条绳子，把靴底跟靴面绑紧。

youdao

Attach one coin to each end of the string with a small piece of tape.

用一小块胶布将硬币分别粘在绳子的两头。

youdao

To keep himself awake as he flew east during the long night, Post tied a piece of string to one finger.

VOA: special.2009.03.18

Benedetti will lead the ensemble as they prepare and perform what is billed as "one of the most difficult and exciting pieces for string orchestra - Bartok's Divertimento - a piece selected to challenge the players and encourage musical excellence".

BBC: Scotland

She takes one jade bangle, a light piece clearly designed for a woman quite slim of wrist, and dangles it from a string.

BBC: How to buy jade in Asia