Correct

赤膊

/ chìbó / 
Strokes

Definition

bare to the waist

Example

As a Verb

be barebacked; be bare/naked/stripped to the waist

1
Tā
他
chìbó
赤膊
tiàojìn
跳进
hélǐ
河里
  
。

He leaped into the river, barebacked.

2
Nóngmín
农民
zài
在
yányán
炎炎
lièrì
烈日
xià
下
chìbó
赤膊
láozuò
劳作
  
。

The farmers worked bare to the waist in the boiling/blazing/scorching sun.

3
Dǎ
打
chìbó
赤膊

be bare/naked/stripped to the waist