Doorstepping
(doorstep 的现在分词) n. 门阶
🗣️ 情景例句
Without my glasses, I'm as blind as a bat.
没有眼镜， 我就像个蝙蝠一样瞎。
Friendship should not be all on one side.
友谊不该只是单方面的事。
In man's early days, competition with other creatures must have been critical.
在人类早期，人类与其他生物的竞争一定是必不可少的。