例句與用法

1. Microdots are generally concealed under stamps, on top of punctuation marks in typewritten letters, or under the lips of envelopes .
   縮微點一般隱藏在郵票下面、打印信件的標(biāo)點符號上邊或者信封的折口內(nèi)。
2. This job is handling routine tasks ， such as typing letters and documents ， receiving visitors ， answering phone calls and so on
   這項工作要處理日常常規(guī)工作，如打印信件和文件、接待來客、接電話等等。