created sense approved 踩线/踩線 · cǎixiàn · foot fault
踩线 / 踩線
cǎixiàn
foot fault
to commit a foot fault in sports, such as tennis, by stepping on a boundary line
发球时必须注意不能踩线。
created sense approved 踩线/踩線 · cǎixiàn · scout itinerary
踩线 / 踩線
cǎixiàn
scout itinerary
to scout or reconnoiter a potential travel route or tour itinerary for planning purposes
在推出这条旅游路线之前，旅行社先派人去踩线了。