1. The thief was wearing a mask.
    贼是带着面具的。

2. Inevitably they will do everything they can to preserve this false mask, but they will do very little to enhance their inner value and personal growth.
    他们必然会不择手段地去维护自己的这种假面具，他们不太会去努力提高自己的内涵和素质。

3. For a fee of $15.60 per jump, Tokyo Roof rented me a flight suit, special shoes, gloves, earplugs(耳塞), a crash helmet, a face mask, a tooth guard and a safety harness (but no parachute).
    蹦极跳每次收费15.60美元，"东京屋顶" 租给我一套飞行服，特殊的鞋子、手套、耳塞、头盔、面罩、护牙套、还有一套安全装备（但是没有降落伞）。