It's all settled ─ we're leaving on the nine o'clock plane.
一切都定下来了——我们乘九点的航班走。
When Mary didn't come by nine o'clock, we gave her up.
玛丽九点还未到，我们认为她不会来了。
You'll have your work cut out to get there by nine o'clock.
你九点钟前赶到那里可不容易。
The food, such as it was, was served at nine o'clock.
那饭虽说是粗茶淡饭，却到九点钟才端上来。
It's exactly nine o'clock.
现在是九点整。