Balsa is a tropical American tree, and — more often in everyday talk — the wood from that tree. The wood is famous for being extremely light: a thick piece can feel almost like foam in your hands. People who build model planes, simple rafts, or school craft projects love it because it is easy to cut and does not weigh much.

Balsa這種樹叫Balsa is a tropical American tree是一種美洲熱帶樹, and — more often in everyday talk — the wood from that tree而日常說話裡更常指這種樹的木材. The wood is famous for being extremely light這種木材以極輕出名: a thick piece can feel almost like foam in your hands一塊厚木頭拿在手上幾乎像保麗龍一樣輕. People who build model planes, simple rafts, or school craft projects做模型飛機、簡易木筏，或學校勞作的人 love it because it is easy to cut and does not weigh much很愛用它，因為好切又不重

It is a material word, not a poetic one.

It is a material word這是一個指材料的字, not a poetic one不是詩意的字

Though actually, it has nothing to do with balsam or balm, even though the spellings sit next to each other in the dictionary. English borrowed balsa from Spanish; Spanish probably took it from an old language of Spain, perhaps Basque or Iberian.

Though actually不過其實, it has nothing to do with balsam or balm它跟balsam或balm一點關係都沒有, even though the spellings sit next to each other in the dictionary儘管它們的拼法在字典裡排在一起. English borrowed balsa from Spanish英文的balsa是從西班牙文借來的; Spanish probably took it from an old language of Spain, perhaps Basque or Iberian西班牙文大概又是從西班牙當地某個古語言借的，可能是巴斯克語或伊比利語