adv.<苏格兰>关于那件事
Thereat he opened the gate and went in there.
于是他打开了门,并且走了进去.
Thereat allthere is a big engagement by the Americans on this.
毫无疑问美国人对此进行过大范围的接触.
It is rather cold thereat night.
带点厚衣服,那里晚上是很凉的.