Correct

省力

/ shěnglì / 
Strokes

Definition

to save labor/to save effort

Example

As a Verb

save effort/energy/labour

1
Jìsuànjī
计算机
hěn
很
shěnglì
省力
  
。

Computers save us much labour.

2
Gàn
干
zhè
这
huór  
活儿
yīdiǎnr  
一点儿
dōu
都
bù
不
shěnglì
省力
  
。

This job is not easy at all.

3
De
得
xiǎng
想
yī
一
gè
个
shěnglì
省力
de
的
bànfǎ
办法
  
。

We have to find a way that saves us efforts. / We have to find a better way for this job.