The rear half, by comparison, is empty to allow for artillery transport.

相比之下，后半部分很空，可用于火炮运输。

youdao

When the buffer is empty, the transport layer is responsible for refilling it.

当缓冲空了，传送层负责再装满它。

youdao

When the buffer is empty, the transport layer is responsible for refilling it.

当缓冲空了，传送层负责再装满它。

youdao