适合

suit; fit; fit in; do; match; become; befit; agree with; be suitable for; be appropriate for; be fitting for; be right for; be proper for; be compatible with; be tailored to; suitable; meet; appropriate; fitting; proper; fitness; suitability; harmony; compatibility; appositeness; suitably; appropriately; fittingly; to; around; on point; in tune

铃声

ring; ringtone; jingle; toll; chime; bell sound

开头

begin; start; outset; opening; beginning; lead-off; at the beginning

直接

direct; immediate; straightforward; firsthand; unmediated; directly; straightaway; immediately; directness; immediacy