乔木，通常非常大和板根，很少灌木。

Trees, often very large and buttressed, rarely shrubs.

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天花板上的两根木梁松动了。

Two wooden beams had come loose from the ceiling.

《柯林斯英汉双解大词典》

每块板都钉在两根垂直的木制支撑物上。

Each slab was nailed to two straight wooden supports.

《柯林斯英汉双解大词典》

只有一根细电线连接着花板和这盏灯。

The only attachment of the lamp to the ceiling is a thin wire.

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我怀疑天花板上那根横梁的强度。

I have doubts about the strength of that beam in the ceiling.

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接下来，他用两根排线连接通过洞洞板（wire-wrap board）连接到一起。

Next, he made two ribbon cables to connect the two sockets to a wire-wrap board.

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接下来，他用两根排线连接通过洞洞板（wire-wrap board）连接到一起。

Next, he made two ribbon cables to connect the two sockets to a wire-wrap board.

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