forth
/fɔ:θ; fɔrθ/ adv
part
1 (arch 古) out from home, etc （离家等处）外出
explorers who ventured forth to discover new lands 冒险去发现新地域的探险家.
2 (fml 文) onwards; forwards 向前; 向前方
from that day forth 从那天起.
3 (idm 习语) and (,so on and) `so forth and other things of the kind that have already been mentioned 等, 等等（表示列举未尽）
They discussed investments, the state of the economy and so forth. 他们讨论了投资和经济状况等问题. back and forth => back3.