You use time to ask or talk about a specific point in the day, which can be stated in hours and minutes and is shown on clocks.
钟点 ...a two-week period of time. …一段为期两周的时间。
If you time something for a particular hour, day, or period, you plan or decide to do it or cause it to happen at this time.
为…安排时间 He timed the election to coincide with new measures to boost the economy. 他把选举的时间安排在振兴经济的新措施出台的时候。
You use times to show multiplication. Three times five is 3x5.
乘 • Four times six is 24. 4乘以6等于24。
You use at times to say that something happens or is true on some occasions or at some moments.
有时 • The debate was highly emotional at times. 辩论有时非常情绪化。