opportune
adj
(fml 文)
1 (of time) suitable or favourable for a purpose (指时间)合适的, 恰好的, 适宜的
arrive at an opportune moment 来得正好.
2 (of an action or event) done or coming at the right time (指行动或事情)适时的, 及时的
an opportune remark, statement, intervention, etc 合时宜的言词、 言语、 干预等
Your arrival was most opportune. 你来得真是时候.
After the accident, all the lines and taps were clearly marked and new people joining the workforce were given a talk on safety before they started work.