Emails are frequently lost or over-looked.

电子邮件经常会丢失或者被忽略。

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Coach Who Frequently Lost It Seemingly Had Nothing Left.

一个时常失败的教练似乎一无所有。

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Expression of the PTEN tumor suppressor is frequently lost in breast cancer in the absence of mutation or promoter methylation through as yet undetermined mechanisms.

PTEN肿瘤抑制因子在乳腺癌中虽常呈失表达，但并不是通过基因突变或促进子甲基化而实现的，因此其失表达的机制还不清楚。

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What is often lost in these cases is the sanction: frequently, a Bar as in an industry death sentence.

FORBES: Sharing Commissions Gets Stockbroker Tossed From Industry

Fuel is bought frequently, in large amounts, and by itself (rather than, say, getting lost in the grocery bill).

ECONOMIST: Calculating the costs of pricey oil | The