immediately upon looking
（看）一眼（就）；马上
she saw at a glance what had happened.
她一眼就看出发生了什么事。
(archaic)look briefly
(古)浏览，扫视
glancing his severe eye around the group.
他严厉地扫视了一下这群人。
On initial consideration
在最初考虑上
At first glance the plan seemed unworkable.
乍一看此计划好象不可行