written approval

基本解释

Written approval of their parents is obligatory.
而且需要父母的书面批准。
Neither Party shall have the right to transfer rights and obligations arising under this Contract to third parties without the prior written approval of the other Party.
如果没有另一方的事先书面批准，任何一方都无权转让合约下产生的权利和义务给第三方。
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Only kids who are elder than 14 years old can participate in tandem parachuting. Written approval of their parents is obligatory.
只有14岁以上的儿童才可以参加协力跳伞。而且需要父母的书面批准。

Needless to say, from a career survival perspective, a registered person should always obtain written approval from the employer brokerage firm.
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Unwin told the story to Rayner, his 10-year-old son, who gave it high approval in a written note.
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