Correct

水性

/ shuǐxìng / 
Strokes

Definition

swimming ability/characteristics of a body of water (depth, currents etc)/aqueous/water-based (paint etc)

Example

As a Noun

watermanship; swimming ability

1
Tā
他
shuǐxìng
水性
hěn
很
hǎo
好
  
,
néng
能
yóu
游
guò
过
chángJiāng
长江
  
。

He is a good swimmer and can swim over/across the Yangtze River.

2
Shí
识
shuǐxìng
水性

swim like a duck

As a Noun

characteristics of a body of water

3
Shúxī
熟悉
chángJiāng
长江
shuǐxìng
水性

know the characteristics of the Yangtze River

As an Adjective

water-soluble; water-based; water-thinned

4
Shuǐxìng
水性
túliào
涂料

water-based paint; water-thinned paint; water-dilutable paint

5
Shuǐxìng
水性
rùnhuájì
润滑剂

water-soluble lubricator