Treponema
n. [微]密螺旋体
🗣️ 情景例句
That took place right after the First World War, didn't it?
它就发生在第一次世界大战之后，是吗？
Why?
为什么？
Whether a planet can support life depends on the size and brightness of its star, that is its 'sun'.
一颗行星是否能够维持生命取决于它的恒星——即它的“太阳”——的大小和亮度。