I have a stomachache.
我胃痛。搜趣网
You need some rest since you have a stomachache.
你胃痛，需要一些体息。

ache
[英][eɪk][美][ek]
n.疼痛;
vi.疼痛; 渴望;
第三人称单数：aches过去分词：a搜趣网ched复数：aches现在进行时：搜趣网aching过去式：ached

The bending and lifting made his back ache.
弯腰和搬东西使他的后背疼痛。

ache
[英][eɪk][美][ek]
n.疼www.souquanme.com痛;
vi.疼痛;
渴望;
第三人称单数：aches过去分词：ached复数：ach搜趣网es现在进行时：aching过去式：ached
The
bending
and
lifting
made
his
back
ache.
弯腰和搬东西使他的后背疼痛。