阿司匹林似乎可以减缓癌症的扩散速度，但是医生们需要对病人进行研究从而确定药品到底能达到何种效果。
Aspirin appears to slow the spread of cancer, but doctors need to do studies on patients to confirm how effective the drug is.
指特定用户为了在特定使用环境下能够以何种程度利用某种产品，以有效地达到特定目的，取得满意的效果。
"[Usability is] the extent to which a product can be used by specified users to achieve specified goals with effectiveness, efficiency and satisfaction in a specified context of use." - ISO 9241-11.
要想达到预期效果，不论何种粘接，必须仔细做表面的准备。当用环氧树脂层压复合时，我对固化复合表面的准备如下。
The surface must be carefully prepared for any kind of bond to perform as expected. When laminating with epoxy, I prepare a cured composite surface as follows.
同时也学会了拍电影以及摄影的技巧，以及运用何种镜头来达到最佳的拍摄效果、各种电影胶片，数码的、灯光、节奏等等。
I learnt about the craft of film and also photography, which lenses to use to get the best out of a shot. Different film stocks, digital, lighting and pacing.
同时也学会了拍电影以及摄影的技巧，以及运用何种镜头来达到最佳的拍摄效果、各种电影胶片，数码的、灯光、节奏等等。
I learnt about the craft of film and also photography, which lenses to use to get the best out of a shot. Different film stocks, digital, lighting and pacing.
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