1. 不引人注意的, 无价值的：mental set 心(理定)向 | unnoted 不引人注意的, 无价值的 | convergent power series ring 收敛幂级数环

2.

2. 无价值的：unnerve 失去勇气 | unnoted 无价值的 | unnoticed 不引人注意的

1. not taken into account

    e.g. his retirement was not allowed to go unmarked

    Synonym: overlookedunmarked