当然

1. without doubt; certainly; of course; to be sure

♦ 这样做~最好。 Of course this is the best way to do it.

♦ 借你的笔用一下可以吗? — ~可以。 May I borrow your pen?—Certainly! (or Sure!)

2. natural

♦ ~同盟军 natural ally

♦ 你取得成功是~的。 It is quite natural that you should succeed.

3. ex officio

♦ ~成员 an ex officio member (of a committee, etc.)

♦ ~继承人 heir apparent