没有

not have; lack; be without; be devoid of; do not have; be short of; go without; not; out; no; without; never; none; zero; empty; void; lacking; destitute; nonexistent; sans; minus; absent; absence; nonexistence; nothingness; zilch; there is not; not available; nope; naw; nothing; non-; a-; an-; -less; N/A; n/a (short for not available)

前奏

prelude; overture; prologue; introduction; precursor; preface