Okay on the surface of it it is easy to set out arguments logic book style, let's try this one.

表面上，把它们设定成逻辑的课本形式很简单，我们来试试这个。

youdao

The Nine Peaks in Songjiang are the only natural hills in Shanghai. Green trees amid the hills and red-roofed houses set off one another, with dense forests covering in the surface of the hills.

松江九峰是上海唯一一处自然山丘，山间绿树红楼掩映，山体表面林木深秀。

youdao

There are two choices. Basically, whenever you want to set up a flux integral you have to choose one side of the surface.

有两种选择，当你要建立通量的积分时,就必须取定曲面的正向。

youdao

When the larva grows to around 300 microns (roughly one-third of a millimetre), it extends its foot and seeks a suitable surface on which to set.

ECONOMIST: A dozen ocean-cleaners and a pint of Guinness, please