從那之後，我了解到口譯員的工作是很辛苦的，各個領域的知識都必須要涉略，

從那之後，我了解到口譯員的工作是很辛苦的，各個領域的知識都必須要涉略，口譯時也必須要百分百的專注。

結果 (英文) 1:

Since then, I learned that the interpreters are working very hard, in all areas of knowledge must be involved in a little, when the interpreter must be a hundred percent focused.

結果 (英文) 2:

Since then, I have learned that the work of interpreters is very hard, knowledge in all fields must be involved, interpretation must also be 100% focused.

結果 (英文) 3:

Since then, I have learned that interpreters' work is very hard. Knowledge in all fields must be involved and interpretation must be 100% focused.