building block 積木；基本構成要素

building-block 積木；空心砌塊；構造塊；結構單元

積木

[詞典] building block; juggle;

1、building block

n.建築砌塊;（兒童遊戲用的）積木，構件;基礎材料

複數： building blocks

例句：The little boy is piling up his building blocks.

小男孩正在搭積木。

2、toy bricks

n.積木

例句：Toy bricks are good to children"s intellectual development.

積木對開發兒童智力有好處。