达意

cí bù dá yì

词不达意。

The words fail to convey the idea.

méi néng dá yì

没能达意。

The idea didn't get across.

miàn bù biǎo qíng yě shì zài dá yì

面部表情也是在达意。

Facial expressions are part of the conveyance of meaning.

tā bù dà huì jiǎng rì yǔ bù guò shàng néng miǎn qiǎng dá yì

他不大会讲日语，不过尚能勉强达意。

He doesn't speak much Japanese but he can make himself understood.