| 失速平坠着陆 pancake landing |
| 失速滑翔 stalled glide |
| 失速状态 stall conditions |
| 失速警告指示器 stall indicator |
| 失速飞行控制 automatic prevention control |
| 失道寡助 an unjust cause finds scant ... |
| 失重 agravity |
| 失重状态 zero-g |
| 失重飞行 weightless flight |
| 失闪 mishap |
| 失陪 Excuse me,but I must be leav... |
| 失陷 fall |
| 失音 anaudia |
| 失音症 aphonia |
| 失魂 be frightened or stricken |
| 失魂丧胆 strike awe into one's heart |
| 失魂落魄 be scared out of one's wits ... |
| 夲 go forward |
| 头 head |
| 头一次 the first time |
| 头一遭乘船 take a ship for the first ti... |
| 头七 the first seventh a surname |
| 头三天 the first three days last |
| 头上传球 overhead pass |
| 头上冒汗 Beads of sweat stood out on ... |
