英和和英

to take effect―bear fruit―do its work―be effectual―be successful―succeed―（武器なら）―do execution―tell

to take effect―bear fruit―be effectual―be successful―succeed―（武器なら）―do execution―tell

to achieve a great success

to perform a great deed

My attempt has proved effectual―been successful―succeeded.

The attempt was effectual.

The effect is miraculous.

The demonstration made an impression.

The attempt was ineffectual

My labours are fruitless of results―My labours are unavailing―I have laboured in vain―（諦めの言葉に用いれば）―It is no use trying―It is a bad job.