20'

weigh....against 对……不利

28'

in so far as 就……而言

22'

considerably 相当，非常
positive advantage

24'

a great many
seek for
be engaged in

25'

apply to
play a much larger part
go to such an extent that

27'

have great difficulty in
enter 登记
such and such a book 某本书
for fear
agent特工
be likely to

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