The expressional sites in young stalk are in phloem.
幼莖表達(dá)分布在韌皮部；
Smile" is one of the expressional tongues of body language."
“笑”是人體語言（態(tài)勢語）中的表情語之一。
People have discussed a lot about color, color words and their expressional functions.
人們對色彩、色彩詞以及它們的表情功能有過不少論述。