一直=( 英译 )

我相信提问者要的“一直”是时空性质的，而非什么“straight”
所以，一直=
1. all along
2. continuously
3. always
4. from the beginning of ... up to ...
5. all the time;
6. all the while;
7. all along;
8. at all times;
9. all the way

all the time

always

be always waiting

一直
all along
all the while
all through
at all times
straight
[streit]
adj.
直的, 诚实的, 正直的, 率直的, 整齐的
adv.
直, 直接, 一直

still