Unintelligent

Don't bother asking her for help with math.She's about as dumb as a coal bucket when it comes to numbers.

Her energetic dancing was like a bull in a china shop, narrowly avoiding collisions with other dancers and nearly knocking over props.

容易上当的人, 软柿子

Because he was known as a soft touch, his friends frequently borrowed money from him and rarely paid it back.

因为他被称为软柿子，他的朋友经常向他借钱，很少还钱。

Don't bother discussing politics with him; he's a nose of wax, changing his views depending on who he's talking to.

Don't try to pull that trick on me.I wasn't born yesterday, you know.

He talked tough, but when it came to taking action, his resolve was weak as water.

During the meeting, he just sat there with a blank expression, as if the lights were on, but nobody was home.It was clear he wasn't paying attention.

Even a dog knows enough to come out of the rain, Charlie.

笨兔子, 傻瓜

He forgot his keys for the fifth time this week.What a dumb bunny!

他这周第五次忘记带钥匙了。真是个笨蛋！

He thought he could fix the car without any knowledge of mechanics.He's thick as two short planks when it comes to automobiles.

He believes in conspiracy theories and wears a tinfoil hat.He's as daft as a brush!

He may be a great athlete, but when it comes to critical thinking, he's all brawn and no brain.

During the training session, John proved to be quick on the uptake.He learned the software's features and functionality in no time.

After his strange explanation for the missing files, it's clear he's not playing with a full deck.