Single quotes are better, because then you can use double quotes inside the one-liner.

单引号更好，因为使用单引号后您可以在一行程序内使用双引号。

youdao

DIEUDONNE BARIBUTSA: "if you go in the market in Africa, you find those bags with a small liner inside, like if you buy sugar and so on."

BARIBUTSA：“如果你去到非洲市场，当你买糖一类的东西时，你会发现那种带内衬的袋子。”

youdao

The filter screen is arranged inside the inner liner, and the speed change gear box is arranged on the upper cover of the shell.

内胆里面设置有滤网，在外壳的上盖上，还设置有变速齿轮箱。

youdao

One wonders if the next step might be to reperforate the well using the new, improved tiny guns that will fit inside the liner.

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As the liner is inserted into the pipe, it is turned inside out and forced through using water or air pressure.

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