連中がこのことに気づかぬうち機先を制したほうがいいでしょう。の英語

We'd probably be best off beating them to the punch before they notice that fact.

I don't like this model but I'll have to make do with it.

Avail yourself of this opportunity.

Make good use of this opportunity.

Chances are here, take them.

Don't let such a good opportunity go by.

This is a golden opportunity we'd be stupid to pass up. Let's get to work and finish it all in one fell swoop.

It's better to take your time at this job than to hurry and make mistakes.

This desk is as good as that one.

Unless you decide now, the opportunity will be lost.

Don't let this chance slip by.

The scheme is opportune―seasonable―timely―well-timed.

Such opportunities do not occur every day.

This desk is better than that one.

taking full advantage of an opportunity while it lasts

This desk is as good as that one.

I availed myself of this favorable opportunity.

I made use of this good opportunity.

I recommend this machine.

You shouldn't start on anything until you've gotten a rough idea of it [of what's involved].

Everybody blows it once in a while. It's better not to obsess on it.

Make hay while the sun shines.

Don't throw away a good opportunity.

This desk is as good as that one.

to cause an opportunity to arise

I want my own desk.

An interference would now be unseasonable―untimely―mistimed.

Please hold the line so as not to lose your place in the queue.

You had better begin with easier questions.

You should begin with easier questions.