51.   Two days later, he called to confirm that the test had detected the presence of Ehrlichia chaffeensis.

52.   Vapor-tracing machines detect the presence of minute particles of drugs or explosives at ports of entry.

53.   Weavers of orb webs use it as a way to detect the presence of insect prey in the web.

54.   When a sensor detects the presence of bright light, the charge darkens the surface of the mirror.

55.   Preliminary field tests often inaccurately detect the presence of anthrax and are not considered significant unless confirmed.

56.   A URINE test being considered to quickly detect the presence of the banned asthma drug that has tainted mainland pigs may not be reliable, an expert has warned.

57.   Arribage was tested after a match in September and his lawyers asked for a second test, which also detected the presence of nandrolone, a steroid.

58.   Arribage was tested after a match in September and his lawyers asked for a second test, which also detected the presence of nandroline, a steroid.

59.   Breaking the jungle silence, an alarm in her wristwatch goes off, detecting the presence of a toxic chemical agent.

60.   By detecting the presence of organic molecules, they can better understand the composition of stars and other phenomena.

v. + presence >>共 370
have 10.19%
increase 5.80%
expand 4.42%
confirm 3.95%
establish 3.48%
detect 3.04%
maintain 3.00%
feel 2.53%
indicate 2.33%
know 2.19%
detect + n. >>共 983
cancer 3.31%
sign 2.66%
problem 2.66%
presence 2.46%
shower 2.41%
change 1.64%
explosive 1.56%
fraud 1.40%
movement 1.40%
disease 1.40%
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