who knows 谁知道.
例句：
Who knows what changes tomorrow may bring?
谁知道将来会有什么变化？
Who knows how to plant trees?
谁知道如何种树？
扩展资料
I hope youre the only one who knows it.
但愿只有你知道这件事。
Who knows most says least.
懂得最多的人，说得最少。
Who knows what they look like?
谁知道他们长什么样子呢？
Who knows when well be done?
谁知道我们什么时候完成呢？
