Correct

漫无边际

/ màn wúbiān jì / 
Strokes

Definition

extremely vast/boundless/limitless/digressing/discursive/going off on tangents/straying far off topic

Example

Definition

boundless

1
Mànwúbiānjì
漫无边际
de
的
shāmò
沙漠

limitless/vast expanse of desert

2
Mànwúbiānjì
漫无边际
de
的
hǎiyáng
海洋

immense sea

3
Mànwúbiānjì
漫无边际
de
的
cǎoyuán
草原

boundless prairie

Definition

(of speech, writing, etc) discursive; rambling; straying far from the subject

4
Zhè
这
piān
篇
wénzhāng
文章
xiě
写
de
得
mànwúbiānjì
漫无边际
  
。

The article strays far from the subject.

5
Tánhuà
谈话
mànwúbiānjì
漫无边际

be discursive in one's speech