1、The body is built from balsa wood, and the wings powered by a wire crank driven by a rubber band.
燕尾蝶的身體是用輕木做的，而翅膀的動(dòng)力來源為用橡皮圈驅(qū)動(dòng)的金屬曲柄。

2、Scientists had long assumed that the balsa tree's target audience must be bats.
科學(xué)家們從很早就開始推測巴爾沙樹的目標(biāo)客戶肯定是蝙蝠。

3、strong lightweight wood of the balsa tree used especially for floats.
輕而堅(jiān)韌的輕木木料，用于制筏。

4、But it's tough being an upstart, and many balsa trees don't live much past 30 or 40 years of age.
雖然扎根初期總是一鳴驚人，但很多巴爾沙樹活不過三四十年。

5、Balsa is a light wood
西印度輕木是一種很輕的木材

6、And now we come to a minor balsa mystery.Why does the tree flower at night?
現(xiàn)在讓我們來揭開一個(gè)關(guān)于巴爾沙樹的小小謎團(tuán)：為什么它們會(huì)選擇在夜里開花？

7、It's built mainly from balsa and ply, with many glass and carbon fiber moldings to reduce weight.
它的建立主要是從巴爾薩和鋪設(shè)，許多玻璃和碳纖維成型，以減輕重量。

8、The children were asked to model an airplane out of balsa - wood.
孩子們被要求用輕木做模型飛機(jī)。 。

9、The sandwich of the wing is made of the perfect selected light balsa and fiberglass.
廂房的交互重疊是用完全的挑選輕白塞木和玻璃纖維做成的。

balsa翻譯