词汇	tie the boat up
释义	tie the boat up 停泊船只
随便看	optical fixed reticule sight optical flame detector optical flame fire detector optical flare optical flash frame optical flat optical flat gauge optical flat glass optical flat glass filter optical flatness optical flatness gauge optical flatplane glass disk optical flight evaluation optical flint optical flint glass optical flints optical flip-flop optical floating zone technique optical flow optical flow algorithm optical-flow algorithm Optical flow analysis optical flow-based optical flow calculation optical flow computation