同时
at the same time.
同时;然而
例句：
Father and Jack came home at the same time.
父亲和杰克同时到家。
I know he is untruthful, but, at the same time, Imust admit he is a good worker.
我知道他不老实，然而我必须承认他是位优秀的劳工。
更不必提...
to say nothing of.
更不必提……，更不用说……
例句：
She can dance, to say nothing of singing.
她会跳舞，歌唱就更不用说了。
He has no scholarship, to say nothing of experience.
他一无学识，更别提经验了。
按时
on schedule.
按时，准时
例句：
The train was in on schedule.
火车准时进站。
The airplane reached Paris on schedule.
班飞机按时飞抵巴黎。
在海上
at sea.
在海上，在航海中
例句：
The ship and its crew were lost at sea.
那艘船及其船员在海上失踪了。
When he woke up, the ship was at sea.