to increase into a large amount
增加到大量 (zengjia dao daliang)
"Emails tend to pile up over the weekend."
"周末期间电子邮件往往会堆积起来。" (zhoumo qijian dianzi youjian wangwang hui duiji qilai)
to form groups of two
To make the right moves to achieve success.
to accelerate; to move faster
something or someone that causes continuous trouble or annoy...
a feeling of being grateful to someone who has helped you
To stay calm and steady, especially during difficulties.